Undesirable effects may be minimised by using the lowest effective dose for the shortest duration necessary to control symptoms (see section 4.2 and GI and cardiovascular and cerebrovascular risks below).
Concomitant use of dexibuprofen with other NSAIDs including selective cyclooxygenase-2 inhibitors should be avoided (see section 4.5).
Gastrointestinal risks
The elderly have an increased frequency of adverse reactions to NSAIDs especially gastrointestinal bleeding and perforation which may be fatal (see section 4.2).
Gastrointestinal bleeding, ulceration and perforation, which can be fatal, has been reported with all NSAIDs at anytime during treatment, with or without warning symptoms or a previous history of serious GI events.
The risk of GI bleeding, ulceration or perforation is higher with increasing NSAID dose, in patients with a history of ulcers, particularly if complicated with haemorrhage or perforation (see section 4.3), alcoholism and in the elderly. These patients should commence treatment on the lowest dose available. Combination therapy with protective agents (e.g. misoprostol or proton pump inhibitors) should be considered for these patients, and also for patients requiring concomitant low dose acetylsalicylic acid, or other drugs likely to increase gastrointestinal risk (see below and section 4.5).
Patients with a history of GI toxicity particularly when elderly should report any abdominal symptoms (especially GI bleeding) particularly in the initial stages of treatment.
Caution should be advised in patients receiving concomitant medication which could increase the risk of ulceration or bleeding, such as oral corticosteroids, anticoagulants such as warfarin, selective serotonin-reuptake inhibitors or anti-platelet agents such as acetylsalicylic acid (see section 4.5).
When GI bleeding or ulceration occurs in patients receiving Dexibuprofen, the treatment should be withdrawn.
NSAIDs should be given with care to patients with a history of gastrointestinal disease (ulcerative colitis, Crohn's disease) as their condition may be exacerbated (see section 4.8).
Hypersensitivity
As with other NSAIDs, allergic reactions, including anaphylactic/anaphylactoid reactions, can also occur without earlier exposure to the drug.
Caution is advised in patients with bronchial asthma (acute or in the past), seasonal allergic rhinitis, nasal congestion (e.g. nasal polyps), chronic obstructive pulmonary disease or chronic respiratory infections, since NSAIDs may induce bronchospasm in these patients (see section 4.3). Severe acute hypersensitivity reactions (e.g. anaphylactic shock) are observed very rarely. Therapy must be discontinued at the first sign of a hypersensitivity reaction after taking dexibuprofen. Medically necessary measures corresponding to the symptoms must be initiated by competent persons.
Cardiovascular and cerebrovascular effects
Appropriate monitoring and advice are required for patients with a history of hypertension and/or mild to moderate congestive heart failure as fluid retention and oedema have been reported in association with NSAID therapy.
Clinical trial and epidemiological data suggest that use of ibuprofen, particularly at a high dose (2400 mg daily) and in long term treatment may be associated with a small increased risk of arterial thrombotic events (for example myocardial infarction or stroke). Overall, epidemiological studies do not suggest that low dose ibuprofen (e.g. ≤ 1200 mg daily) is associated with an increased risk of myocardial infarction. Although data on the arterial thrombotic risk of dexibuprofen are limited, it can be assumed that the risk with high doses of dexibuprofen (1200 mg/day) is similar to that associated with high doses of ibuprofen (2400 mg/day).
Patients with uncontrolled hypertension, congestive heart failure (NYHA II-III), established ischaemic heart disease, peripheral arterial disease, and/or cerebrovascular disease should only be treated with dexibuprofen after careful consideration and high doses (1200 mg/day) should be avoided.
Similar consideration should be made before initiating longer-term treatment of patients with risk factors for cardiovascular events (e.g. hypertension, hyperlipidaemia, diabetes mellitus, smoking) particularly when high doses of dexibuprofen (1200 mg/day) are required.
Cases of Kounis syndrome have been reported in patients treated with dexibuprofen. Kounis syndrome has been defined as cardiovascular symptoms secondary to an allergic or hypersensitive reaction associated with constriction of coronary arteries and potentially leading to myocardial infarction.
Renal effects
Renal tubular acidosis and hypokalaemia may occur following acute overdose and in patients taking ibuprofen products over long periods at high doses (typically greater than 4 weeks), including doses exceeding the recommended daily dose.
Caution is required in patients suffering hepatic and renal disease; in hypertensive patients, in the elderly or in patients taking concomitant diuretics or other medicinal products affecting renal function; the risk of fluid retention, oedema and a deterioration in renal function must be taken into account. If used in these patients, the dose of dexibuprofen should be kept as low as possible and renal function should be regularly monitored.
In patients with dehydration in the extracellular space from any cause, e.g. during the peri- or post-operative phases of major surgical interventions, appropriate caution is required when using NSAIDs because of possible bleeding, electrolyte and volume complications. Monitoring of renal function is recommended as a precautionary measure in these cases.
As with all NSAIDs, dexibuprofen can increase plasma levels of urea and creatinine. As with other NSAIDs, dexibuprofen can be associated with adverse effects on the renal system, which can lead to glomerular nephritis, interstitial nephritis, renal papillary necrosis, nephrotic syndrome and acute renal failure (see section 4.2, 4.3 and 4).
In general the habitual use of analgesics, especially the combination of different analgesic drug substances, can lead to lasting renal lesions with the risk of renal failure (analgesic nephropathy). Thus combinations with dexibuprofen or other NSAIDs (including OTC products and selective COX-2 inhibtors) should be avoided.
Liver
As with other NSAIDs, dexibuprofen can cause transient small increases in some liver parameters, and also significant increases in SGOT and SGPT. In case of a relevant increase in such parameters, therapy must be discontinued (see section 4.2 and 4.3).
Severe cutaneous adverse reactions (SCARs)
Severe cutaneous adverse reactions (SCARs), including exfoliative dermatitis, erythema multiforme, Steven-Johnson syndrome (SJS), Toxic Epidermal Necrolysis (TEN), Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS syndrome), and acute generalized exanthematous pustulosis (AGEP), which can be life-threatening or fatal, have been reported in association with the use of ibuprofen (see section 4.8). Most of these reactions occurred within the first month.
If signs and symptoms suggestive of these reactions appear Dexibuprofen should be withdrawn immediately and an alternative treatment considered (as appropriate).
Coagulation
In common with other NSAIDs dexibuprofen may reversibly inhibit platelet aggregation and function and prolong bleeding time. Caution should be exercised in patients with haemorrhagic diathesis and other coagulation disorders and when dexibuprofen is given concurrently with oral anticoagulants (see section 4.5).
Data from preclinical studies suggest that inhibition of platelet aggregation by low-dose acetylsalicylic acid may be impaired if NSAIDs such as dexibuprofen are administered concurrently. This interaction could reduce the cardiovascular-protective effect. Therefore if concomitant administration of low dose acetylsalicylic acid is indicated special precaution is required if duration of treatment exceeds short term use (see section 4.5 and 5.1).
Masking of symptoms of underlying infections
Dexibuprofen can mask symptoms of infection, which may lead to delayed initiation of appropriate treatment and thereby worsening the outcome of the infection. This has been observed in bacterial community acquired pneumonia and bacterial complications to varicella. When Dexibuprofen is administered for fever or pain relief in relation to infection, monitoring of infection is advised. In nonhospital settings, the patient should consult a doctor if symptoms persist or worsen.
Additional warnings and precautions for use
Patients receiving long-term treatment with dexibuprofen should be monitored as a precautionary measure (renal, hepatic functions and haematologic function/blood counts).
Dexibuprofen should only be given with care to patients with systemic lupus erythematosus and mixed connective tissue disease, because such patients may be predisposed to NSAID induced renal and CNS side effects, including aseptic meningitis (see section 4.8).
During long-term, high dose, off-label treatment with analgesics, headaches can occur which must not be treated with higher doses of the medicinal product.
Drugs known to inhibit cyclooxygenase/prostaglandin synthesis may impair fertility reversibly and are not recommended in women attempting to conceive. In women who have difficulties conceiving or who are undergoing investigation of infertility, withdrawal of dexibuprofen should be considered (see section 4.6).
Information on sodium content
This medicine contains less than 1 mmol sodium (23 mg) per tablet, i.e. is essentially 'sodium-free'.