- 1. Name of the medicinal product
- 2. Qualitative and quantitative composition
- 3. Pharmaceutical form
- 4. Clinical particulars
- 4.1 Therapeutic indications
- 4.2 Posology and method of administration
- 4.3 Contraindications
- 4.4 Special warnings and precautions for use
- 4.5 Interaction with other medicinal products and other forms of interaction
- 4.6 Fertility, pregnancy and lactation
- 4.7 Effects on ability to drive and use machines
- 4.8 Undesirable effects
- 4.9 Overdose
- 5. Pharmacological properties
- 5.1 Pharmacodynamic properties
- 5.2 Pharmacokinetic properties
- 5.3 Preclinical safety data
- 6. Pharmaceutical particulars
- 6.1 List of excipients
- 6.2 Incompatibilities
- 6.3 Shelf life
- 6.4 Special precautions for storage
- 6.5 Nature and contents of container
- 6.6 Special precautions for disposal and other handling
- 7. Marketing authorisation holder
- 8. Marketing authorisation number(s)
- 9. Date of first authorisation/renewal of the authorisation
- 10. Date of revision of the text
How to start taking Millinette
If no preceding hormonal contraceptive use in the past monthTaking of the tablets should begin on the first day of the woman's natural cycle (i.e. on the first day of the woman's menstrual bleeding). One may begin taking the pills on day 2-5, but in these cases it is recommended that a barrier method also be used for the first 7 days on which pills are taken during the first cycle.
When replacing another contraceptive pill of the combination typeThe woman should start taking Millinette on the next day after taking the last active tablet in her previous package of contraceptive pills but no later than the day after the usual tablet-free or placebo-tablet period of her previous contraceptive pill.
When changing from progestogen-only preparations (progestogen-only pills, injection, implant)The woman may change from progestogen-only pills (POPs) on any day. The first tablet should be taken on the day after any tablet of the POP package. When changing from an implant, Millinette should be started on the day the implant is removed. When changing from injections, Millinette should be started when the next injection is due to be given. In all these cases the woman is advised to also use a barrier method for the first 7 days of taking the pills.
After an abortion in the first trimesterThe woman may start taking the pills immediately. If she does so, no further contraceptive steps need be taken.
After delivery or abortion in the second trimesterFor breastfeeding women - see section 4.6.The woman should be advised to begin taking the tablets on day 21- 28 after delivery in non-lactating women or after abortion in the second trimester. If she starts later, she should be advised to also use a barrier method during the first 7 days of taking the pills. If she has already had intercourse, the possibility of pregnancy should be excluded before she begins taking the pills, or she should wait for her first menstruation.
Missed tabletsMissing a tablet for less than 12 hours does not diminish the contraceptive protection. The woman should take the tablet as soon as she remembers, and continue taking the rest of the tablets as usual.Missing a tablet for more than 12 hours can diminish the contraceptive protection. The two following rules may be helpful in dealing with missed tablets.1. Taking of the tablets should never be delayed by a period longer than 7 days.2. It takes 7 days of uninterrupted ingestion of the tablets to achieve sufficient suppression of the hypothalamus-pituitary-ovarian axis.Thus, the following advice can be given in daily practice:
Week 1The user should take the last missed tablet as soon as she remembers, even if this means that she needs to take 2 tablets at the same time. From then on she should continue to take the tablets at the usual time. At the same time she should use a barrier method, i.e. a condom, for the next 7 days. If she had intercourse during the past 7 days, she should consider the possibility that she might be pregnant. The more tablets have been missed, and the closer this happened to the monthly tablet-free period, the higher the risk of pregnancy.
Week 2The user should take the last missed tablet as soon as she remembers, even if this means that she needs to take 2 tablets at the same time. From then on she should continue to take the tablets at the usual time. If the tablets have been taken correctly for the 7 days prior to the missed tablet, it is not necessary to take any additional contraceptive precautions. If this is not the case, however, or if more than 1 tablet has been missed, the woman should be advised to use another birth control method for 7 days.
Week 3The risk of reduced protection is imminent because of the approaching tablet-free period. The reduced contraceptive protection can be prevented, however, by adjusting the intake of the tablets. It is, therefore, not necessary to take any additional contraceptive precautions, provided that the tablets have been taken correctly for the 7 days prior to the missed tablet, if one follows one of the following choices. If this is not the case, the woman should be advised to follow the first of the two choices, and at the same time use another birth-control method for 7 days.1. The user should take the last missed tablet as soon as she remembers even if this means that she needs to take 2 tablets at the same time. From then on she should continue to take the tablets at the usual time. She begins the next pack immediately after she took the last tablet from the current package; that means no pause between packages. The user will probably not get her menstruation before the end of the second package, but she may experience spotting or withdrawal bleeding on the days when she takes the tablets.2. The woman can also be advised to stop taking tablets from the current package. In that case she should observe a tablet-free period for up to 7 days, including the days when she missed the tablets, and then continue with the next pack.If the woman missed the tablets, and subsequently did not get her menstruation in the first normal tablet-free period, she should consider the possibility that she may be pregnant.
What to do in case of vomiting/diarrhoeaIf vomiting occurs within 3-4 hours after tablet taking, absorption may not be complete. In this case the advice concerning missed tablets, described above should be followed. Diarrhoea may reduce the efficacy by preventing full absorption. If the woman does not want to change her usual tablet intake, she should take the required extra tablet(s) from another blister pack.
How to advance or delay menstruationOnly in exceptional cases menstruation can be delayed as described below.To delay menstruation, the woman should continue with another pack of Millinette without observing the tablet-free period. Menstruation can be delayed as long as is desired up to the end of the second package, but no longer. While menstruation is being delayed the woman may experience withdrawal bleeding or spotting. Regular intake of Millinette should be resumed after the normal tablet-free period of 7 days.To move menstruation to a weekday other than that on which the woman is used to having it under the current tablet schedule, she can be advised to shorten the next tablet-free period by as many days as she wishes. The shorter the pause, the higher the risk that she will not get her menstruation and will have withdrawal bleeding or spotting while she is taking the next pack (which is also true when menstruation is being delayed).
|- Hypersensitivity to the active substances or to any of the excipients listed in section 6.1; - Presence or risk of venous thromboembolism (VTE)|
|- Venous thromboembolism current VTE (on anticoagulants) or history of (e.g. deep venous thrombosis [DVT] or pulmonary embolism [PE]).- Known hereditary or acquired predisposition for venous thromboembolism, such as APC-resistance, (including Factor V Leiden), antithrombin-III-deficiency, protein C deficiency, protein S deficiency- Major surgery with prolonged immobilisation (see section 4.4)- A high risk of venous thromboembolism due to the presence of multiple risk factors (see section 4.4)|
|- Presence or risk of arterial thromboembolism (ATE)|
|- Arterial thromboembolism current arterial thromboembolism, history of arterial thromboembolism (e.g. myocardial infarction) or prodromal condition (e.g. angina pectoris)- Cerebrovascular disease current stroke, history of stroke or prodromal condition (e.g. transient ischaemic attack, TIA)- Known hereditary or acquired predisposition for arterial thromboembolism, such as hyperhomocysteinaemia and antiphospholipid-antibodies (anticardiolipin-antibodies, lupus anticoagulant).- History of migraine with focal neurological symptoms.- A high risk of arterial thromboembolism due to multiple risk factors (see section 4.4) or to the presence of one serious risk factor such as:|
|- diabetes mellitus with vascular symptoms- severe hypertension- severe dyslipoproteinaemia|
|- Ocular disorder of vascular origin- Known or suspected malignant tumours in the breast - Known or suspected malignant endometrial tumours or other oestrogen-dependent neoplastic disorders- Serious or recent hepatic disorders, as long as liver function tests are not normalised- Present or previous benign or malignant liver tumours- Undiagnosed vaginal bleeding- Pregnancy or suspected pregnancy (see section 4.6)|
WarningsIf any of the conditions or risk factors mentioned below is present, the suitability of Millinette should be discussed with the woman.In the event of aggravation, or first appearance of any of these conditions or risk factors, the woman should be advised to contact her doctor to determine whether the use of Millinette should be discontinued.
Risk of venous thromboembolism (VTE)The use of any combined hormonal contraceptive (CHC) increases the risk of venous thromboembolism (VTE) compared with no use. Products that contain levonorgestrel, norgestimate or norethisterone are associated with the lowest risk of VTE. Other products such as Millinette may have up to twice this level of risk. The decision to use any product other than one known to have the lowest VTE risk should be taken only after a discussion with the woman to ensure she understands the risk of VTE with CHCs, how her current risk factors influence this risk, and that her VTE risk is highest in the first ever year of use. There is also some evidence that the risk is increased when a CHC is re-started after a break in use of 4 weeks or more.In women who do not use a CHC and are not pregnant about 2 out of 10,000 will develop a VTE over the period of one year. However, in any individual woman the risk may be far higher, depending on her underlying risk factors (see below). It is estimated1 that out of 10,000 women who use a CHC containing gestodene between 9 and 12 women will develop a VTE in one year; this compares with about 62 in women who use a levonorgestrel-containing CHC. In both cases, the number of VTEs per year is fewer than the number expected during pregnancy or in the postpartum period.VTE may be fatal in 1-2% of cases.
Number of VTE events per 10,000 women in one yearExtremely rarely, thrombosis has been reported to occur in CHC users in other blood vessels, e.g. hepatic, mesenteric, renal or retinal veins and arteries.
Risk factors for VTEThe risk for venous thromboembolic complications in CHC users may increase substantially in a woman with additional risk factors, particularly if there are multiple risk factors (see table).Millinette is contraindicated if a woman has multiple risk factors that put her at high risk of venous thrombosis (see section 4.3). If a woman has more than one risk factor, it is possible that the increase in risk is greater than the sum of the individual factors in this case her total risk of VTE should be considered. If the balance of benefits and risks is considered to be negative a CHC should not be prescribed (see section 4.3).
Table: Risk factors for VTE
|Obesity (body mass index over 30 kg/m²)||Risk increases substantially as BMI rises. Particularly important to consider if other risk factors also present.|
|Prolonged immobilisation, major surgery, any surgery to the legs or pelvis, neurosurgery, or major trauma Note: temporary immobilisation including air travel >4 hours can also be a risk factor for VTE, particularly in women with other risk factors||In these situations it is advisable to discontinue use of the pill (in the case of elective surgery at least four weeks in advance) and not resume until two weeks after complete remobilisation. Another method of contraception should be used to avoid unintentional pregnancy. Antithrombotic treatment should be considered if Millinette has not been discontinued in advance.|
|Positive family history (venous thromboembolism ever in a sibling or parent especially at a relatively early age e.g. before 50).||If a hereditary predisposition is suspected, the woman should be referred to a specialist for advice before deciding about any CHC use|
|Other medical conditions associated with VTE||Cancer, systemic lupus erythematosus, haemolytic uraemic syndrome, chronic inflammatory bowel disease (Crohn's disease or ulcerative colitis) and sickle cell disease|
|Increasing age||Particularly above 35 years|
Symptoms of VTE (deep vein thrombosis and pulmonary embolism)In the event of symptoms women should be advised to seek urgent medical attention and to inform the healthcare professional that she is taking a CHC.Symptoms of deep vein thrombosis (DVT) can include:- unilateral swelling of the leg and/or foot or along a vein in the leg;- pain or tenderness in the leg which may be felt only when standing or walking,- increased warmth in the affected leg; red or discoloured skin on the leg.Symptoms of pulmonary embolism (PE) can include:- sudden onset of unexplained shortness of breath or rapid breathing;- sudden coughing which may be associated with haemoptysis;- sharp chest pain;- severe light headedness or dizziness;- rapid or irregular heartbeat.Some of these symptoms (e.g. shortness of breath, coughing) are non-specific and might be misinterpreted as more common or less severe events (e.g. respiratory tract infections).Other signs of vascular occlusion can include: sudden pain, swelling and slight blue discoloration of an extremity. If the occlusion occurs in the eye symptoms can range from painless blurring of vision which can progress to loss of vision. Sometimes loss of vision can occur almost immediately.
Risk of arterial thromboembolism (ATE)Epidemiological studies have associated the use of CHCs with an increased risk for arterial thromboembolism (myocardial infarction) or for cerebrovascular accident (e.g. transient ischaemic attack, stroke). Arterial thromboembolic events may be fatal.
Risk factors for ATEThe risk of arterial thromboembolic complications or of a cerebrovascular accident in CHC users increases in women with risk factors (see table). Millinette is contraindicated if a woman has one serious or multiple risk factors for ATE that puts her at high risk of arterial thrombosis (see section 4.3). If a woman has more than one risk factor, it is possible that the increase in risk is greater than the sum of the individual factors - in this case her total risk should be considered. If the balance of benefits and risks is considered to be negative a CHC should not be prescribed (see section 4.3).
Table: Risk factors for ATE
|Increasing age||Particularly above 35 years|
|Smoking||Women should be advised not to smoke if they wish to use a CHC. Women over 35 who continue to smoke should be strongly advised to use a different method of contraception.|
|Obesity (body mass index over 30 kg/m2)||Risk increases substantially as BMI increases. Particularly important in women with additional risk factors|
|Positive family history (arterial thromboembolism ever in a sibling or parent especially at relatively early age e.g. below 50).||If a hereditary predisposition is suspected, the woman should be referred to a specialist for advice before deciding about any CHC use|
|Migraine||An increase in frequency or severity of migraine during CHC use (which may be prodromal of a cerebrovascular event) may be a reason for immediate discontinuation|
|Other medical conditions associated with adverse vascular events||Diabetes mellitus, hyperhomocysteinaemia, valvular heart disease and atrial fibrillation, dyslipoproteinaemia, systemic lupus erythematosus.|
Symptoms of ATEIn the event of symptoms women should be advised to seek urgent medical attention and to inform the healthcare professional that she is taking a CHC.Symptoms of a cerebrovascular accident can include:- sudden numbness or weakness of the face, arm or leg, especially on one side of the body;- sudden trouble walking, dizziness, loss of balance or coordination;- sudden confusion, trouble speaking or understanding;- sudden trouble seeing in one or both eyes;- sudden, severe or prolonged headache with no known cause;- loss of consciousness or fainting with or without seizure.Temporary symptoms suggest the event is a transient ischaemic attack (TIA).Symptoms of myocardial infarction (MI) can include:- pain, discomfort, pressure, heaviness, sensation of squeezing or fullness in the chest, arm, or below the breastbone;- discomfort radiating to the back, jaw, throat, arm, stomach;- feeling of being full, having indigestion or choking;- sweating, nausea, vomiting or dizziness;- extreme weakness, anxiety, or shortness of breath;rapid or irregular heartbeats.
Cervical cancerIn some epidemiological studies an increased risk of cervical cancer has been reported in long term users of COCs, but it is still not clear to which extent this finding may be influenced by impacts of sexual behaviour and other factors, such as human papilloma virus (HPV).
Breast cancerA meta-analysis from 54 epidemiological studies has shown that women using combined oral contraceptives have a slightly increased relative risk (RR=1.24) of having breast cancer diagnosed. This increased risk gradually declined over 10 years following cessation of COC use. Since breast cancer is a rare condition in women below 40 years of age, the increase in number of diagnosed cases of breast cancer in current and previous users of COCs is small compared to the risk of breast cancer during their entire life time.These studies do not present evidence for a causal relationship. The observed pattern of an increased risk may be caused by an earlier diagnosing of breast cancer in COC users, the biological effects of COCs or a combination of both.
Liver tumoursBenign and malignant liver tumours have been reported in users of COCs. These tumours have, in isolated cases, lead to life threatening, intra-abdominal haemorrhage. A liver tumour must be taken into consideration as a differential diagnosis when severe pain occurs in the upper abdomen, if there is hepatomegaly, or if there are signs of intra-abdominal haemorrhage in women taking COCs.
Other conditionsWomen with hypertriglyceridaemia, or a family history thereof, may be at increased risk of pancreatitis when taking COCs.In the case of acute or chronic impairment of liver function the use of Millinette should be stopped until liver function tests have returned to normal. Steroid hormones may be poorly metabolised in patients with impaired liver function.Hyperlipidaemic women should be closely monitored if they choose to use COCs.Even though slight increases in blood pressure have been reported in many women taking COCs, clinically important increases in blood pressure are rare. If persistent clinical hypertension develops during COC use, intake should be discontinued and the hypertension treated. Use of COCs may be resumed, if appropriate, when normotensive values are reached with antihypertensive therapy.It has been reported that the following conditions may occur, or worsen both during pregnancy and during use of COCs, but the evidence of a relationship is inconclusive: Jaundice and/or pruritus in connection with cholestasis; development of gallstones; porphyria; systemic lupus erythematosus; haemolytic uraemic syndrome; Sydenham's chorea; herpes gestationis; loss of hearing due to otosclerosis.COCs may have an influence on the peripheral insulin resistance and glucose tolerance. Therefore, diabetics should be closely monitored during COC use.Millinette contains lactose and sucrose. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption or with rare hereditary problems of fructose intolerance or sucrose-isomaltase insufficiency should not take this medicinal product.Crohn's disease and colitis ulcerosa have been associated with the use of combined oral contraceptives.Chloasma may occur, in particular in women with a medical history of chloasma gravidarum. Women with a tendency to chloasma should avoid exposure to sunlight or ultraviolet radiation while taking COCs.There have been case reports of retinal thrombosis with the use of COCs. COCs should be discontinued if there is unexplained partial or complete loss of vision; onset of proptosis or diplopia; papilloedema; or retinal vascular lesions.Women who get severely depressed during the use of COCs should discontinue use and be advised to use an alternative contraceptive method while trying to determine if the symptoms are due to the COC preparation. Women who have previously suffered from episodes of major depression should be closely monitored and stop the use of the COC if the symptoms of depression relapse.Herbal preparations containing St John's wort (Hypericum perforatum) should not be used while taking Millinette due to the risk of decreased plasma concentrations and reduced clinical effects of Millinette (see section 4.5).
Medical examination/consultationPrior to the initiation or reinstitution of Millinette a complete medical history (including family history) should be taken and pregnancy must be ruled out. Blood pressure should be measured and a physical examination should be performed, guided by the contraindications (see section 4.3) and warnings (see section 4.4). It is important to draw a woman's attention to the information on venous and arterial thrombosis, including the risk of Millinette compared with other CHCs, the symptoms of VTE and ATE, the known risk factors and what to do in the event of a suspected thrombosis.The woman should also be instructed to carefully read the user leaflet and to adhere to the advice given. The frequency and nature of examinations should be based on established practice guidelines and be adapted to the individual woman.Women should be advised that hormonal contraceptives do not protect against HIV infections (AIDS) and other sexually transmitted diseases.Reduced efficacyThe efficacy of oral contraceptives may be reduced in the case of missed tablets or vomiting (see section 4.2) or concomitant use of other medicinal product (see section 4.5).Reduced cycle controlWith all combined oral contraceptives, irregular bleeding (spotting or break through bleeding) may occur, especially during the first months. Hence, the evaluation of any irregular bleeding should be considered after a period of adaptation of approximately 3 cycles. If bleeding irregularities persist COCs with a higher hormonal content may need to be considered. If bleeding irregularities occur after previously regular cycles, then non-hormonal causes should be considered, and adequate diagnostic measures are indicated to exclude malignancy or pregnancy. Occasionally withdrawal bleeding during the tablet-free interval may not occur at all. If the tablets have been taken according to the instructions described in section 4.2, it is unlikely that the woman is pregnant. However, if the tablets have not been taken according to the instructions, before the first absent withdrawal bleeding, or if two withdrawal bleedings are overdue, pregnancy should be excluded before COC use is continued 1 These incidences were estimated from the totality of the epidemiological study data, using relative risks for the different products compared with levonorgestrel-containing CHCs. 2 Mid-point of range of 5-7 per 10,000 WY, based on a relative risk for CHCs containing levonorgestrel versus non-use of approximately 2.3 to 3.6
Laboratory testsThe use of contraceptive steroids can influence the results of certain laboratory tests, including the biochemical parameters of liver, thyroid, adrenal, and kidney function; plasma levels of (transport) proteins, such as corticosteroid-binding globulin and lipid/lipoprotein fractions; the parameters of carbohydrate metabolism, and the parameter of coagulation and fibrinolysis. The changes usually remain within the normal test ranges.
PregnancyMillinette is not indicated during pregnancy. If pregnancy occurs during medication with Millinette, the preparation should be withdrawn immediately. Data on pregnancies exposed to gestodene are too limited to permit conclusions concerning negative effects of gestodene on pregnancy, health of the foetus or neonate. Until now, no relevant epidemiological data are available. Animal studies do not indicate direct or indirect harmful effects with respect to pregnancy, embryonal/foetal development, parturition or post-natal development (see section 5.3). Most epidemiological studies have revealed neither an increased risk of birth defects in children born to women who used COCs prior to pregnancy, nor a teratogenic effect when COCs were taken inadvertently during early pregnancy. However, based on the hormonal action of the active substances, an adverse effect of the active substances on embryo-foetal development cannot be fully excluded.The increased risk of VTE during the postpartum period should be considered when re-starting Millinette (see section 4.2 and 4.4).
Breast-feedingContraceptive steroids can influence breastfeeding, as they can lower the amount and change the composition of breast milk. The use of contraceptive steroids should, therefore, generally not be advised to a breastfeeding mother before her child is completely weaned. Small amounts of contraceptive steroids and/or their metabolites can be excreted in the milk, but there are no indications that this has a deleterious effect on the health of the infant. Millinette should not be used during breastfeeding.
|System Organ class||Very common≥1/10||Common≥1/100 to <1/10||Uncommon and Rare≥1/10000 to<1/1000||Very rare< 1/10000||Not known|
|Neoplasm benign, malignant and unspecified (including cysts and polyps)||Breast cancer Hepatic adenoma Hepatic neoplasm malignant Cervix carcinoma|
|Immune system disorders||Anaphylactic/anaphylactoid reactions, including very rare cases of urticaria, angioedema, and severe reactions with respiratory and circulatory symptoms Systemic lupus erythematosus||Exacerbation of systemic lupus erythematosus|
|Metabolism and nutrition disorders||Fluid retention||Hyperlipidaemia Changes in appetite (increase or decrease)||Exacerbation of porphyria|
|Psychiatric disorders||Changes in libido Mood changes, including depression Nervousness|
|Nervous sytem disorders||Headache||Migraine Dizziness||Chorea||Exacerbation of chorea|
|Eye disorders||Corneal disorder Visual disturbance||Intolerance to contact lenses||Optic neuritis* Retinal vascular thrombosis|
|Ear and labyrinth disorders||Otosclerosis|
|Vascular disorders||HypertensionVenous thromboembolism or Arterial thromboembolism||Aggravation of varicose veins|
|Gastrointestinal disorders||Nausea||Abdominal pain||Vomiting Pancreatitis Abdominal cramps Bloating||Ischemic colitis|
|Hepatobiliary disorders||Gallbladder disease, including gallstones**||Hepatocellular injury (e.g. hepatitis, hepatic function abnormal)|
|Skin and subcutaneous tissue disorders||Acne||Chloasma (melasma), which may persist hirsutism Alopecia Rash Erythema nodosum||Erythema multiforme|
|Renal and urinary disorders||Hemolytic uremic syndrome|
|Reproductive system and breast disorders||Menstruation irregular Breast tenderness||Amenorrhoea Hypomenorrhoea Breast enlargement, secretion Dysmenorrhea Change in menstrual flow Change in cervical ectropion and secretion|
|General disorders and administration site conditions||Irritability|
|Investigations||Weight increased||Changes in weight (increase or decrease)||Smear vaginal abnormal Changes in serum lipid levels, including hypertriglyceridemia Decrease in serum folate levels***|
Description of selected adverse reactionsAn increased risk of arterial and venous thrombotic and thrombo-embolic events, including myocardial infarction, stroke, transient ischemic attacks, venous thrombosis, pulmonary embolism has been observed in women using CHCs, which are discussed in more detail in section 4.4.The following other serious adverse events have been reported in women using COCs, see sections 4.3 and 4.4.- Cervical cancer- Liver tumours- Skin and subcutaneous disorders: chloasma.The frequency of diagnosis of breast cancer is very slightly increased among COC-users. As breast cancer is rare in women under 40 years of age the excess number is small in relation to the overall risk of breast cancer. Causation with COC use is unknown. For further information, see sections 4.3 and 4.4.
Reporting of suspected adverse reactionsReporting 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.
AbsorptionGestodene, when taken orally, is absorbed quickly and completely. Following a single dose the maximum serum concentration of 4 ng/ml is reached in approximately one hour. Bioavailability is approximately 99%.
DistributionGestodene is bound to serum albumin and to sex hormone binding globulin (SHBG). Only 1-2% of the total amount of gestodene in serum is found as free steroid, while 50-70% is specifically bound to SHBG. The ethinylestradiol-induced increase in SHBG influences the distribution of serum proteins, which causes an increase of the SHBG-bound fraction, and a decrease of the albumin-bound fraction. The apparent distribution volume of gestodene is 0.7 l/kg.
BiotransformationGestodene is metabolised completely via the known pathways of steroid metabolism. The metabolic clearance rate from serum is 0.8 ml/min/kg. No interaction occurs when gestodene is taken together with ethinylestradiol.
EliminationSerum level of gestodene is reduced at 2 rates. The last rate is characterised by a halflife of 12 15 hours. Gestodene is not excreted. Its metabolites are excreted in urine and in bile at a ratio of 6:4.The half-life of metabolite excretion is approximately 1 day.
Steady-statePharmacokinetics of gestodene is influenced by the levels of SHBG in serum, which increase to triple values with ethinylestradiol. Upon daily intake, the level of gestodene in serum increases till approximately four times the single dose value, and reaches steady-state within the second half of the treatment cycle.
AbsorptionEthinylestradiol, taken orally, is absorbed quickly and completely. Maximal serum concentration of about 80 pg/ml is reached within 1-2 hours. Complete bioavailability, resulting from pre-systemic conjugation and first-pass metabolism, is approximately 60%.
DistributionEthinylestradiol is predominantly bound non-specifically to albumin (approx. 98.5), and causes increase in serum concentration of SHBG. The apparent distribution volume is found to be approximately 5 l/kg.
BiotransformationEthinylestradiol undergoes pre-systemic conjugation both in the mucosa of the small intestine, and in the liver. Ethinylestradiol is primarily metabolised by aromatic hydroxylation, but many different hydroxylated and methylated metabolites are formed, and found as free metabolites and as glucuronide and sulphate conjugates. The metabolic clearance rate is approximately 5 ml/min/kg.
EliminationSerum level of ethinylestradiol is reduced at 2 rates, the last one with a half-life of 24 hours. Ethinylestradiol is not excreted, but its metabolites are excreted in urine and in bile at a ratio of 4:6. The half-life of metabolite excretion is approximately 1 day.
Steady-stateSteady-state occurs after 3-4 days, and the serum levels of ethinylestradiol are 30-40% higher than at single dose.
Tablet core:Sodium calcium edetateMagnesium stearateSilica colloidal anhydrousPovidone K-30Maize starchLactose monohydrate
Tablet coat:Quinoline yellow (E 104)Povidone K-90Titanium dioxide (E 171)Macrogol 6000TalcCalcium carbonate (E170)Sucrose
Consilient Health Ltd
No. 1 Church Road, Richmond upon Thames, Surrey, TW9 2QE, UK
+44(0)20 3751 1889
+44(0) 20 3751 1888