Fostair NEXThaler 200 micrograms/6 micrograms per actuation inhalation powder

Fostair NEXThaler is indicated in the regular treatment of asthma where use of a combination product (inhaled corticosteroid and long-acting beta₂-agonist) is appropriate:

- patients not adequately controlled with inhaled corticosteroids and 'as needed' inhaled short-acting beta₂-agonist or

- patients already adequately controlled on both inhaled corticosteroids and long-acting beta₂-agonists.

Fostair NEXThaler is indicated in adults.

Note: there are no relevant clinical data on the use of Fostair NEXThaler for the treatment of acute asthma attacks.

Posology

FOSTAIR NEXTHALER is not intended for the initial management of asthma. The dosage of Fostair NEXThaler is individual and should be adjusted to the severity of the disease. This should be considered not only when treatment with combination products is initiated but also when the dose is adjusted. If an individual patient should require a combination of doses other than those available in the combination inhaler, appropriate doses of beta₂-agonists and/or corticosteroids by individual inhalers should be prescribed.

Because of its extrafine particle size distribution, dose adjustment is required when patients are transferred to Fostair NEXThaler inhalation powder from a formulation with a non-extrafine particle size distribution. When switching patients from previous treatments, it should be considered that the recommended total daily dose of beclometasone dipropionate for Fostair NEXThaler is lower than that for current beclometasone dipropionate-containing non-extrafine products and should be adjusted to the needs of the individual patient.

Dose recommendations for adults 18 years and above

Two inhalations twice daily.

The maximum daily dose is 4 inhalations daily.

Patients should be regularly reassessed by a doctor, so that the dosage of Fostair NEXThaler remains optimal and is only changed on medical advice. The dose should be titrated to the lowest dose at which effective control of symptoms is maintained. When control of symptoms is maintained with the lowest recommended dosage, then the next step-down could include the inhaled corticosteroid alone.

A lower strength of the beclometasone dipropionate component in the same Nexthaler device is available for step-down treatment (Fostair NEXThaler 100/6 micrograms).

Patients should be advised to take Fostair NEXThaler every day even when asymptomatic.

Special populations

There is no need to adjust the dose in elderly patients.

There are no data available for use of Fostair NEXThaler in patients with hepatic or renal impairment (see section 5.2).

Paediatric population

Fostair NEXThaler 200/6 micrograms should not be used in children and adolescents below 18 years.

Method of administration

FOSTAIR NEXTHALER is for inhalation use.

Nexthaler is a breath-operated inhaler. Moderate and severe asthmatic patients were shown to be able to produce sufficient inspiratory flow to trigger inhalation release from Nexthaler (see section 5.1). The delivery of Fostair NEXThaleris flow-independent in the range of inspiratory flow that this patient population can achieve through the inhaler.

Correct use of the Nexthaler inhaler is essential in order for the treatment to be successful. The patient should be advised to read the Patient Information Leaflet carefully and follow the instructions for use as given in the leaflet.

The number of inhalations shown in the window on the shell does not decrease on closing the cover if the patient has not inhaled through the inhaler.

The patient should be instructed to only open the inhaler's cover when needed. In the event that the patient has opened the inhaler but not inhaled, and the cover is closed, the metered dose is moved back to the powder reservoir within the inhaler; the following metered dose can be safely inhaled.

Patients should rinse their mouth or gargle with water or brush their teeth after inhaling (see section 4.4).

INSTRUCTIONS FOR USE OF NEXTHALER INHALER

A. Contents of the Package

For information on the contents of the package, see section 6.5.

If the package contents are not the same as described in section 6.5, return your inhaler to the person who supplied it and get a new one.

B. General Warnings & Precautions

• Do not remove the inhaler from the pouch if you do not intend to use it immediately.

• Only use your inhaler as indicated.

• Keep the cover closed until you need to take a dose from your inhaler.

• When you are not using your inhaler keep it in a clean and dry place.

• Do not attempt to take your Nexthaler inhaler apart for any reason.

C. Key features of your Nexthaler inhaler

Taking a dose from your Nexthaler inhaler requires just three simple steps: Open, Inhale, Close.

D. Before using a new Nexthaler inhaler

1. Open the pouch and take out your inhaler.

o Do not use your inhaler if the pouch is not sealed or it is damaged – return it to the person who supplied it and get a new one.

o Use the label on the box to write down the date you open the pouch.

2. Inspect your inhaler.

o If your inhaler looks broken or damaged, return it to the person who supplied it and get a new one.

3. Check the Dose Counter Window. If your inhaler is brand new you will see “ 120” in the Dose Counter Window.

o Do not use a new inhaler if the number shown is less than “ 120” – return it to the person who supplied it and get a new one.

E. How to use your Nexthaler inhaler

• If you are not sure you are receiving your dose correctly contact your pharmacist or doctor.

• If you are not sure the dose counter has gone down by one after inhalation, wait until your next scheduled dose and take this as normal. Do not take an extra dose.

E.1. Open

1. Hold your inhaler firmly in the upright position.

2. Check the number of doses left: any number between “ 1” and “ 120” shows that there are doses left.

o If the Dose Counter Window shows “ 0” there are no doses left – dispose of your inhaler and get a new one.

3. Open the cover fully.

4. Before inhaling breathe out as far as is comfortable.

o Do not breathe out through your inhaler.

E.2. Inhale

Whenever possible, stand or sit in an upright position when inhaling.

1. Lift your inhaler up, bring it to your mouth and place your lips around the mouthpiece.

o Do not cover the air vent when holding your inhaler.

o Do not inhale through the air vent.

2. Take a quick and deep breath through your mouth.

o You may notice a taste when you take your dose.

o You may hear or feel a click when you take your dose.

o Do not inhale through your nose.

o Do not remove your inhaler from your lips during the inhalation.

3. Remove your inhaler from your mouth.

4. Hold your breath for 5 to 10 seconds or as long as is comfortable.

5. Breathe out slowly.

o Do not breathe out through your inhaler.

E.3. Close

1. Move your inhaler back to the upright position and close the cover fully.

2. Check that the dose counter has gone down by one.

3. If you need to take another dose, repeat steps E.1 to E.3.

F. Cleaning

• Normally, it is not necessary to clean your inhaler.

• If necessary you may clean your inhaler after use with a dry cloth or tissue.

o Do not clean your inhaler with water or other liquids. Keep it dry.

G. Storage and Disposal

For information on storage conditions and disposal instructions, see section 6.4 and 6.6.

Hypersensitivity to the active substances or to any of the excipients listed in section 6.1.

It is recommended that the dose is tapered when the treatment is discontinued; treatment should not be stopped abruptly.

The management of asthma should normally follow a stepwise programme and patient response should be monitored clinically and by lung function tests.

If patients find the treatment ineffective medical attention must be sought. Increasing use of rescue bronchodilators indicates a worsening of the underlying condition and warrants a reassessment of the asthma therapy. Sudden and progressive deterioration in control of asthma is potentially life- threatening and the patient should undergo urgent medical assessment. Consideration should be given to the need for increased treatment with corticosteroids, either inhaled or oral therapy, or antibiotic treatment if an infection is suspected.

Patients should not be initiated on Fostair NEXThaler during an exacerbation, or if they have significantly worsening or acutely deteriorating asthma. Serious asthma-related adverse events and exacerbations may occur during treatment with Fostair NEXThaler. Patients should be asked to continue treatment but to seek medical advice if asthma symptoms remain uncontrolled or worsen after initiation on Fostair NEXThaler.

As with other inhalation therapy paradoxical bronchospasm may occur with an immediate increase in wheezing, cough and shortness of breath after dosing. This should be treated immediately with a fast-acting inhaled bronchodilator. Fostair NEXThaler should be discontinued immediately, the patient assessed and alternative therapy instituted if necessary.

Fostair NEXThaler is not intended for the initial management of asthma.

For treatment of acute asthma attacks patients should be advised to have their short-acting bronchodilator available at all times.

Patients should be reminded to take Fostair NEXThaler daily as prescribed even when asymptomatic.

Once asthma symptoms are controlled, consideration may be given to gradually reducing the dose of Fostair NEXThaler. Regular review of patients as treatment is stepped down is important. The lowest effective dose of Fostair NEXThaler should be used (see section 4.2).

Systemic effects of inhaled corticosteroids may occur, particularly at high doses prescribed for prolonged periods. These effects are much less likely to occur than with oral corticosteroids. Possible systemic effects include Cushing's syndrome, Cushingoid features, adrenal suppression, growth retardation in children and adolescents, decrease in bone mineral density, cataract, glaucoma, and more rarely, a range of psychological or behavioural effects including psychomotor hyperactivity, sleep disorders, anxiety, depression or aggression (particularly in children). It is important therefore that the dose of inhaled corticosteroid is titrated to the lowest dose at which effective control of asthma is maintained.

Prolonged treatment of patients with high doses of inhaled corticosteroids may result in adrenal suppression and acute adrenal crisis. Children and adolescents aged less than 16 years inhaling higher than recommended doses of beclometasone dipropionate may be at particular risk. Situations which could potentially trigger acute adrenal crisis, include trauma, surgery, infection or any rapid reduction in dosage. Presenting symptoms are typically vague and may include anorexia, abdominal pain, weight loss, tiredness, headache, nausea, vomiting, hypotension, decreased level of consciousness, hypoglycaemia, and seizures. Additional systemic corticosteroid cover should be considered during periods of stress or elective surgery.

Patients transferring from oral to inhaled corticosteroids may remain at risk of impaired adrenal reserve for a considerable time. Patients who have required high dose emergency corticosteroid therapy in the past or have received prolonged treatment with high doses of inhaled corticosteroids may also be at risk. This possibility of residual impairment should always be borne in mind in emergency and elective situations likely to produce stress, and appropriate corticosteroid treatment must be considered. The extent of the adrenal impairment may require specialist advice before elective procedures.

Fostair NEXThaler should be administered with caution in patients with active or quiescent pulmonary tuberculosis, fungal and viral infections in the airways.

Fostair NEXThaler should be used with caution (which may include monitoring) in patients with cardiac arrhythmias, especially third degree atrioventricular block and tachyarrhythmias, idiopathic subvalvular aortic stenosis, hypertrophic obstructive cardiomyopathy, ischaemic heart disease, severe heart failure, severe arterial hypertension and aneurysm.

Caution should also be observed when treating patients with known or suspected prolongation of the QTc interval, either congenital or drug induced (QTc > 0.44 seconds). Formoterol itself may induce prolongation of the QTc interval.

Caution is also required when Fostair NEXThaler is used by patients with thyrotoxicosis, diabetes mellitus, phaeochromocytoma and untreated hypokalaemia.

Potentially serious hypokalaemia may result from beta₂-agonist therapy. Particular caution is advised in severe asthma as this effect may be potentiated by hypoxia. Hypokalaemia may also be potentiated by concomitant treatment with other drugs which can induce hypokalaemia, such as xanthine derivatives, steroids and diuretics (see section 4.5). Caution is also recommended in unstable asthma when a number of “ rescue” bronchodilators may be used. It is recommended that serum potassium levels are monitored in such situations.

The inhalation of formoterol may cause a rise in blood glucose levels. Therefore blood glucose should be closely monitored in patients with diabetes.

If anaesthesia with halogenated anaesthetics is planned, it should be ensured that Fostair NEXThaler is not administered for at least 12 hours before the start of anaesthesia as there is a risk of cardiac arrhythmias.

Patients should be advised to rinse the mouth or gargle with water or brush the teeth after inhaling the prescribed dose to minimise the risk of oropharyngeal fungal infections and dysphonia.

The medicninal product contains lactose. Lactose contains small amounts of milk proteins, which may cause allergic reactions. Patients with rare hereditary problems of galactose intolerance, total lactase deficiency or glucose-galactose malabsorption should not take this medicine.

Visual disturbance

Visual disturbance may be reported with systemic and topical corticosteroid use. If a patient presents with symptoms such as blurred vision or other visual disturbances, the patient should be considered for referral to an ophthalmologist for evaluation of possible causes which may include cataract, glaucoma or rare diseases such as central serous chorioretinopathy (CSCR) which have been reported after use of systemic and topical corticosteroids.

Pharmacokinetic interactions

Beclometasone dipropionate undergoes a very rapid metabolism via esterase enzymes.

Beclomethasone is less dependent on CYP3A metabolism than some other corticosteroids, and in general interactions are unlikely; however the possibility of systemic effects with concomitant use of strong CYP3A inhibitors (e.g. ritonavir, cobicistat) cannot be excluded, and therefore caution and appropriate monitoring is advised with the use of such agents.

Pharmacodynamic interactions

Beta-adrenergic blockers can weaken or inhibit the effect of formoterol. Fostair NEXThaler should therefore not be given together with beta-adrenergic blockers (including eye drops) unless there are compelling reasons.

The use of other beta-adrenergic drugs may have potentially additive effects, therefore caution is required when theophylline or other beta-adrenerigic drugs are prescribed concomitantly with formoterol.

Concomitant treatment with quinidine, disopyramide, procainamide, phenothiazines, certain antihistamines (e.g. terfenadine), monoamine oxidase inhibitors and tricyclic antidepressants can prolong the QTc-interval and increase the risk of ventricular arrhythmias.

In addition L-dopa, L-thyroxine, oxytocin and alcohol can impair cardiac tolerance towards beta₂-sympathomimetics.

Concomitant treatment with monoamine oxidase inhibitors including agents with similar properties such as furazolidone and procarbazine may precipitate hypertensive reactions.

There is an elevated risk of arrhythmias in patients receiving concomitant anaesthesia with halogenated hydrocarbons.

Concomitant treatment with xanthine derivatives, steroids, or diuretics may potentiate a possible hypokalaemic effect of beta₂-agonists (see section 4.4). Hypokalaemia may increase the disposition towards arrhythmias in patients who are treated with digitalis glycosides.

Fertility

There are no data in humans. In animal studies in rats, the presence of beclometasone dipropionate at high doses in the combination was associated with reduced female fertility and embryotoxicity (see section 5.3).

Pregnancy

There are no relevant clinical data on the use of Fostair NEXThaler in pregnant women. Animal studies using beclometasone dipropionate and formoterol combination showed evidence of toxicity to reproduction and to the fetuses after high systemic exposure (see section 5.3). High doses of corticosteroids administered to pregnant animals are known to cause abnormalities of fetal development including cleft palate and intra-uterine growth retardation. Because of the tocolytic actions of beta₂-sympathomimetic agents particular care should be exercised in the run up to delivery. Formoterol should not be recommended for use during pregnancy and particularly at the end of pregnancy or during labour unless there is no other (safer) established alternative.

Administration of Fostair NEXThaler during pregnancy should only be considered if the expected benefits outweigh the potential risks.

Lactation (Breast-feeding)

There are no relevant clinical data on the use of Fostair NEXThaler during lactation in humans.

Although no data from animal experiments are available, it is reasonable to assume that beclometasone dipropionate is secreted in milk, like other corticosteroids.

While it is not known whether formoterol passes into human breast milk, it has been detected in the milk of lactating animals.

Administration of Fostair NEXThaler to women who are breast-feeding should be considered if the expected benefits outweigh the potential risks. A decision must be made whether to discontinue breast-feeding or to discontinue/abstain from Fostair NEXThaler therapy, taking into account the benefit of breast-feeding for the child and the benefit of therapy for the woman.

Fostair NEXThaler has no or negligible influence on the ability to drive and use machines.

The most common adverse reaction is tremor. In a 12-week clinical trial with Fostair NEXThaler 100/6 micrograms, tremor was seen only with the highest dose regimen (400/24 micrograms daily), appeared most frequently at the beginning of treatment and was mild in intensity. No patient was withdrawn from the trial as a result of tremor.

Clinical Trials Experience in asthma patients

The safety of Fostair NEXThaler 100/6 micrograms was assessed in active- and placebo-controlled clinical trials in which 719 patients aged 12 and older with asthma of varying severity were exposed to the drug. The incidence of adverse reactions in the table below relates to asthmatic patients aged 12 years and older and is based upon the safety findings of two pivotal clinical trials where Fostair NEXThaler 100/6 micrograms was administered at the doses recommended in this SmPC for a period of 8-12 weeks. No psychiatric disorders were observed in the clinical trials with Fostair NEXThaler 100/6 micrograms but they are included in the table as a potential class-effect of inhaled corticosteroids.

Undesirable effects which have been associated with beclometasone dipropionate and formoterol administered as a fixed combination (Fostair NEXThaler) are given below, listed by system organ class. Frequencies are defined as: very common (≥ 1/10), common (≥ 1/100 to <1/10), uncommon (≥ 1/1,000 to <1/100), rare (≥ 1/10,000 to < 1/1,000) and very rare (<1/10,000), not known (cannot be estimated from the available data).

Among the observed adverse reactions those typically associated with formoterol are: tremor, headache, tachycardia, sinus bradycardia, angina pectoris, myocardial ischaemia, QT prolongation.

Among the observed adverse reactions those typically associated with beclometasone dipropionate are: nasopharyngitis, oral candidiasis, dysphonia, throat irritation, irritability, cortisol free urine decreased, blood cortisol decreased, blood glucose increased.

Additional adverse reactions not observed in the clinical experience with Fostair NEXThaler but typically associated with the inhaled administration of beclometasone dipropionate are other oral fungal infections. Taste disturbances have occasionally been reported during inhaled corticosteroid therapy.

See section 4.4 for measures to minimize the occurrence of oral fungal infections, oral candidiasis and dysphonia.

Systemic effects of inhaled corticosteroids (e.g. beclometasone dipropionate) may occur particularly when administered at high doses prescribed for prolonged periods, these may include Cushing's Syndrome, Cushingoid features, adrenal suppression, decrease in bone mineral density, growth retardation in children and adolescents, cataract and glaucoma (see also section 4.4).

Additional adverse reactions not observed in the clinical experience with therapeutic doses of Fostair NEXThaler 100/6 micrograms but typically associated with the administration of beta₂-agonist such as formoterol are palpitations, atrial fibrillation, ventricular extrasystoles, tachyarrhythmia, potentially serious hypokalaemia and increase/decrease of blood pressure. Insomnia, dizziness, restlessness, and anxiety have occasionally been reported during inhaled formoterol therapy. Formoterol may also induce muscle cramps, myalgia.

Hypersensitivity reactions including rashes, urticaria, pruritus and erythema and oedema of the eye, face, lips and throat (angioedema) have been reported.

As with other inhalation therapy paradoxical bronchospasm may occur with an immediate increase in wheezing, cough and shortness of breath after dosing (see also section 4.4).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard.

The highest recommended dose of Fostair NEXThaler in a single administration is 2 inhalations. Four cumulative inhalations of Fostair NEXThaler (total beclometasone dipropionate 800 micrograms, formoterol 24 micrograms given as a single dose) have been studied in asthmatic patients. The cumulative treatment did not cause abnormal, clinically relevant effect on vital signs and neither serious nor severe adverse reactions were observed (see also section 4.8).

For the pressurised inhalation solution formulation, inhaled doses of up to twelve cumulative actuations of 100/6 micrograms each (total beclometasone dipropionate 1200 micrograms, formoterol 72 micrograms) have been studied in asthmatic patients. The cumulative treatments did not cause abnormal effect on vital signs and neither serious nor severe adverse events were observed.

Excessive doses of formoterol may lead to effects that are typical of beta₂-adrenergic agonists: nausea, vomiting, headache, tremor, somnolence, palpitations, tachycardia, ventricular arrhythmias, prolongation of QTc interval, metabolic acidosis, hypokalaemia, hyperglycaemia.

In case of overdose of formoterol, supportive and symptomatic treatment is indicated. Serious cases should be hospitalised. Use of cardioselective beta-adrenergic blockers may be considered, but only subject to extreme caution since the use of beta-adrenergic blocker medication may provoke bronchospasm. Serum potassium should be monitored.

Acute inhalation of beclometasone dipropionate doses in excess of those recommended may lead to temporary suppression of adrenal function. This does not need emergency action as adrenal function recovers in a few days, as verified by plasma cortisol measurements. In these patients treatment should be continued at a dose sufficient to control asthma.

Chronic overdose of inhaled beclometasone dipropionate: risk of adrenal suppression (see section 4.4.). Monitoring of adrenal reserve may be necessary. Treatment should be continued at a dose sufficient to control asthma.

Pharmacotherapeutic group: Drugs for obstructive airway diseases; Adrenergics in combination with corticosteroids or other drugs, excl. anticholinergics.

ATC code: R03AK08.

Mechanisms of action and pharmacodynamic effects

Fostair NEXThaler contains beclometasone dipropionate and formoterol in a dry powder formulation resulting in an extrafine aerosol with an average mass median aerodynamic diameter (MMAD) of 1.4-1.7 micrometers and co-deposition of the two components. The aerosol particles of Fostair NEXThaler are on average much smaller than the particles delivered in non-extrafine formulations.

A radio-labelled drug deposition study in asthmatic adults with Fostair NEXThaler 100/6 micrograms has demonstrated that a high proportion of the drug (estimated 42% of the nominal dose) is deposited in the lung, with a homogenous deposition through the airways. These delivery characteristics support the use of a low corticosteroid dose with enhanced local pharmacodynamic effects, which were shown to be equivalent to the corresponding pressurised inhalation solution.

The two actives of Fostair NEXThaler have different modes of action. In common with other inhaled corticosteroids and beta₂-agonist combinations, additive effects are seen in respect of reduction in asthma exacerbations.

Beclometasone dipropionate

Beclometasone dipropionate given by inhalation at recommended doses has a glucocorticoid antiinflammatory action within the lungs, resulting in reduced symptoms and exacerbations of asthma with less adverse effects than when corticosteroids are administered systemically.

Formoterol

Formoterol is a selective beta₂-adrenergic agonist that produces relaxation of bronchial smooth muscle in patients with reversible airways obstruction. The bronchodilating effect sets in rapidly, within 1-3 minutes after inhalation, and has a duration of 12 hours after dose administration.

Clinical experience

The efficacy of the two components of Fostair NEXThaler inhalation powder has been assessed for the lower strength (100 micrograms/6 micrograms) in three separate studies in comparison with the 100 micrograms/6 micrograms pressurised inhalation solution formulation in moderate to severe patients with persistent asthma. Overall, the efficacy of the two inhalers is expected to be equivalent in clinical practice at both 1 and 2 inhalations bid.

In one study the primary objective was the efficacy evaluation of the inhaled corticosteroid component measured on bronchodilation (pre-dose FEV₁). A clinically significant improvement in pre-dose FEV₁ was seen in 696 patients with moderate to severe symptomatic asthma at the end of a 3 months treatment period in comparison with baseline values, with 1 inhalation bid and 2 inhalations bid of both formulations. A mean increase of at least 250 mL was observed. There was no clinically relevant difference in pre-dose FEV₁ between Fostair NEXThaler inhalation powder and the pressurised inhalation solution at either dosage. A significant dose-response was observed for morning PEF. Statistical significance for the dose-response in pre-dose FEV₁ was not reached. Measurements of control of asthma such as morning and evening asthma symptoms scores and percentage of days without symptoms improved significantly from baseline through to the end of the treatment period, particularly for the two high doses of both formulations.

In the second study the primary aim was the efficacy evaluation on the long-acting beta₂-agonist component of Fostair NEXThaler. In this study bronchodilation at the onset and up to 12 hrs after single doses administration was measured by serial spirometric evaluations of FEV₁ (FEV₁ AUC over at least 80% of formoterol duration of action). Compared with placebo, Fostair NEXThaler, one inhalation and four inhalations of both actives significantly improved the FEV₁ AUC_0-12. Both doses of Fostair NEXThaler inhalation powder were non-inferior to the corresponding dose of the pressurised inhalation solution formulation. A statistically significant dose-response was found with both formulations between the low and high dose.

In the third study, after a 4-week run-in period with beclometasone dipropionate/formoterol pressurised inhalation solution fixed combination, 1 inhalation bid, 755 controlled asthmatic patients were randomised to 8 weeks of treatment with the same inhaler, with Fostair NEXThaler inhalation powder or with beclometasone dipropionate 100 micrograms per dose inhalation powder, all given at 1 inhalation bid. The primary objective was the change from baseline over the entire treatment period in mean morning expiratory flow (PEF). After 8 weeks of treatment there was no difference in the primary endpoint between the two combination inhalers, both being significantly better than beclometasone dipropionate monotherapy. No differences were found between the two combination inhalers in measures of symptoms such as the asthma control questionnaire score and the number of rescue-free days.

An open-label placebo study was conducted to verify that the inspiratory flow which could be generated through the Nexthaler inhaler is not influenced by patient's age, disease and disease severity, and therefore the activation and drug delivery from the device could be achieved in all patients. The primary endpoint was the percentage of patients in each age and disease group able to activate the inhaler. Eighty-nine patients, in the age range 5-84 years, including moderate and severe asthmatics (FEV₁ > 60% and ≤ 60% predicted, respectively), and moderate and severe COPD patients (FEV₁ ≥ 50% and < 50% predicted, respectively) participated in the trial. All patients, irrespective of age, disease and disease severity, were able to generate sufficient inspiratory flow to activate the Nexthaler inhaler.

In a double blind, randomised, 5-way crossover, placebo controlled study in 60 partially controlled or uncontrolled adult asthmatic patients with two different single doses (1 or 4 inhalations) of Fostair NEXThaler 100 micrograms/6 micrograms and Fostair NEXThaler 200 micrograms/6 micrograms, or placebo, the bronchodilator effect (FEV₁ AUC_0-12h normalised by time) was investigated. The adjusted mean difference (95% CI) for Fostair NEXThaler 200 micrograms /6 micrograms vs Fostair NEXThaler 100 micrograms/6 micrograms was 0.029 (-0.018; 0.076) L for the lower formoterol dose level (1 inhalation – 6 μ g) and 0.027 (-0.020; 0.073) L for the higher formoterol dose level (4 inhalations – 24 μ g). The results showed that the lower limits of the two-sided 95% CIs for the adjusted mean difference between treatments were well above the pre-specified non-inferiority limit (-0.12 L) thus demonstrating the predefined non-inferiority (0.12 L) of Fostair NEXThaler 200 micrograms/6 micrograms compared to the lower strength in terms of FEV₁ AUC_0-12h normalised by time at both formoterol dose levels (6 and 24 micrograms).

Beclometasone dipropionate

Beclometasone dipropionate is a pro-drug with weak glucocorticoid receptor binding affinity that is hydrolysed via esterase enzymes to an active metabolite beclometasone-17-monopropionate which has a more potent topical anti-inflammatory activity compared with the pro-drug beclometasone dipropionate.

Absorption, distribution and biotransformation

Inhaled beclometasone dipropionate is rapidly absorbed through the lungs; prior to absorption there is extensive conversion to its active metabolite beclometasone-17-monopropionate via esterase enzymes that are found in most tissues. The systemic availability of the active metabolite arises from lung and from gastrointestinal absorption of the swallowed dose. The bioavailability of swallowed beclometasone dipropionate is negligible however, pre-systemic conversion to beclometasone-17-monopropionate results in part of the dose being absorbed as the active metabolite.

There is an approximately linear increase in systemic exposure with increasing inhaled dose.

The absolute bioavailability following inhalation from a pressurised metered dose inhaler is approximately 2% and 62% of the nominal dose for unchanged beclometasone dipropionate and beclometasone-17-monopropionate respectively.

Following intravenous dosing, the disposition of beclometasone dipropionate and its active metabolite are characterised by high plasma clearance (150 and 120 L/h respectively), with a small volume of distribution at steady state for beclometasone dipropionate (20L) and larger tissue distribution for its active metabolite (424L). Metabolic disposition of beclometasone dipropionate mainly (82%) results in its active metabolite beclometasone-17-monopropionate.

Plasma protein binding is moderately high (87%).

Elimination

Faecal excretion is the major route of beclometasone dipropionate elimination mainly as polar metabolites. The renal excretion of beclometasone dipropionate and its metabolites is negligible. The terminal elimination half-lives are 0.5 h and 2.7 h for beclometasone dipropionate and beclometasone-17-monopropionate respectively.

Special populations

The pharmacokinetics of beclometasone dipropionate in patients with renal or hepatic impairment has not been studied; however, as beclometasone dipropionate undergoes a very rapid metabolism via esterase enzymes present in intestinal fluid, serum, lungs and liver, to originate the more polar products beclometasone-21-monopropionate, beclometasone-17-monopropionate and beclometasone, hepatic impairment is not expected to modify the pharmacokinetics and safety profile of beclometasone dipropionate.

As beclometasone dipropionate or its metabolites were not traced in the urine, an increase in systemic exposure is not envisaged in patients with renal impairment.

Linearity/non-linearity

A clinical pharmacology study was conducted to evaluate the lung bioavailability and total systemic exposure of the two components across two different dose strengths of the inhalation powder (Fostair NEXThaler 100/6 micrograms and Fostair NEXThaler 200/6 micrograms). These parameters were assessed after a single dose (4 inhalations) of each formulation, both with and without activated charcoal block. The study had an open-label, 6-way cross-over, single-dose design. A total of 30 adult asthmatic patients with an FEV₁ ≥ 70% of the predicted values were enrolled and treated with low daily doses of inhaled corticosteroids (e.g., budesonide or equivalent ≤ 400 µ g/day) or low dose of inhaled corticosteroids/long-acting β ₂-agonists fixed combinations. The lung bioavailability of B17MP (active metabolite of beclometasone dipropionate) and the total systemic exposure of B17MP were dose-proportional between the 200/6 and the approved 100/6 strength in both study conditions (with and without activated charcoal). Formoterol bioequivalence in terms of lung bioavailability and total systemic exposure was not fully demonstrated in this study as the lower 90% CI of C_max and AUC_t were below the 80% lower bioequivalence limit when the two dose strengths were compared. This reduced systemic exposure (which amounts to 20-14% in C_max and AUC_t) does not raise concerns in terms of safety since no differences in systemic effects (including glucose, potassium and cardiovascular parameters) have been observed thus showing that Fostair NEXThaler 200/6 micrograms is at least as safe as Fostair NEXThaler 100/6 micrograms. In terms of lung deposition the difference was 20% and 22% for C_max and AUC_t respectively. The equivalent efficacy in terms of bronchodilation of the two dose strengths (100/6 micrograms and 200/6 micrograms) has been demonstrated in a specific pharmacodynamics study (see section 5.1).

Formoterol

Absorption and distribution

Following inhalation, formoterol is absorbed both from the lung and from the gastrointestinal tract. The fraction of an inhaled dose that is swallowed after administration with a metered dose inhaler (MDI) may range between 60% and 90%. At least 65% of the fraction that is swallowed is absorbed from the gastrointestinal tract. Peak plasma concentrations of unchanged drug occur within 0.5 to 1 hours after oral administration. Plasma protein binding of formoterol is 61-64% with 34% bound to albumin. There was no saturation of binding in the concentration range attained with therapeutic doses. The elimination half-life determined after oral administration is 2-3 hours. Absorption of formoterol is linear following inhalation of 12 to 96 μ g of formoterol fumarate.

Biotransformation

Formoterol is widely metabolised and the prominent pathway involves direct conjugation at the phenolic hydroxyl group. Glucuronide acid conjugate is inactive. The second major pathway involves O-demethylation followed by conjugation at the phenolic 2'-hydroxyl group. Cytochrome P450 isoenzymes CYP2D6, CYP2C19 and CYP2C9 are involved in the O-demethylation of formoterol. Liver appears to be the primary site of metabolism. Formoterol does not inhibit CYP450 enzymes at therapeutically relevant concentrations.

Elimination

The cumulative urinary excretion of formoterol after single inhalation from a dry powder inhaler increased linearly in the 12 – 96 μ g dose range. On average, 8% and 25% of the dose was excreted as unchanged and total formoterol, respectively. Based on plasma concentrations measured following inhalation of a single 120 μ g dose by 12 healthy subjects, the mean terminal elimination half-life was determined to be 10 hours. The (R,R)- and (S,S)-enantiomers represented about 40% and 60% of unchanged drug excreted in the urine, respectively. The relative proportion of the two enantiomers remained constant over the dose range studied and there was no evidence of relative accumulation of one enantiomer over the other after repeated dosing.

After oral administration (40 to 80 μ g), 6% to 10% of the dose was recovered in urine as unchanged drug in healthy subjects; up to 8% of the dose was recovered as the glucuronide.

A total 67% of an oral dose of formoterol is excreted in urine (mainly as metabolites) and the remainder in the faeces. The renal clearance of formoterol is 150 ml/min.

Special populations

Hepatic/Renal impairment: the pharmacokinetics of formoterol has not been studied in patients with hepatic or renal impairment; however, as formoterol is primarily eliminated via hepatic metabolism, an increased exposure can be expected in patients with severe liver cirrhosis.

Clinical experience

The systemic exposure to beclometasone dipropionate and formoterol in the combination has been compared to the single components. There was no evidence of pharmacokinetic or pharmacodynamic (systemic) interactions between beclometasone dipropionate and formoterol.

Non-clinical data of the individual components of Fostair NEXThaler reveal no special hazard for humans based on conventional studies of safety pharmacology and repeated dose toxicity. The toxicity profile of the combination reflected that of single components with no increase in toxicity or unexpected findings.

Reproduction studies in rats showed dose-dependent effects. The presence of beclometasone dipropionate at high doses was associated with reduced female fertility, decrease in the number of implantations and embryofetal toxicity. High doses of corticosteroids to pregnant animals are known to cause abnormalities of fetal development including cleft palate and intra-uterine growth retardation, and it is likely that the effects seen with the beclometasone dipropionate/formoterol combination were due to beclometasone dipropionate. These effects were noted only with high systemic exposure to the active metabolite beclometasone-17-monopropionate (more than 200 fold the expected plasma levels in patients). Additionally, increased duration of gestation and parturition, an effect attributable to the known tocolytic effects of beta₂-sympathomimetics, was seen in animal studies. These effects were noted when maternal plasma formoterol levels were below the levels expected in patients treated with Fostair NEXThaler.

Genotoxicity studies performed with a beclometasone dipropionate/formoterol combination do not indicate mutagenic potential. No carcinogenicity studies have been performed with the proposed combination. However animal data reported for the individual constituents do not suggest any potential risk of carcinogenicity in man.

Lactose monohydrate (may contain small amounts of milk proteins)

Magnesium stearate.

Not applicable.

3 years.

After first opening the sachet, the medicinal product should be used within 6 months.

Store in the original package in order to protect from moisture.

Only remove the inhaler from its foil package immediately before first use.

Before first opening the sachet:

This medicinal product does not require any special temperature storage conditions.

After first opening the sachet:

Do not store above 25° C.

Each carton contains 1, 2 or 3 Nexthaler inhalers which provide 120 inhalations each. Each inhaler is contained in a heat sealed protective sachet (foil package) made of PET/Al/PE (Polyethylene Terephtalate/Aluminium/ Polyethylene) or PA/Al/PE (Polyamide/Aluminium/Polyethylene).

Not all pack sizes may be marketed.

Fostair NEXThaler is a multi-dose inhalation device. The device consists of a casework comprising a lower shell with window to display number of inhalations left and an integral cover. When opened, the cover, which also drives the dose counter mechanism, reveals a mouthpiece through which the powder is inhaled. The lower shell and mouthpiece are made from acrylonitrile butadiene styrene and the cover is made from polypropylene.

Any unused product or waste material should be disposed of in accordance with local requirements.