Topogyne

Topogyne 400 microgram tablets

One tablet contains 400 microgram misoprostol.

Tablet

White, round, flat tablets, with a diameter of 11 mm and thickness of 4.4 mm, with "M400" engraved on one side.

Medical termination of developing intra-uterine pregnancy, in sequential use with mifepristone, up to 49 days of amenorrhea.

Misoprostol is indicated in adults.

Posology

Misoprostol is taken as a single 400 microgram oral dose 36 to 48 hours after taking a single 600 mg oral dose of mifepristone. Information on the posology of mifepristone can be found in the product information of mifepristone.

Vomiting within 30 minutes after the intake could lead to a decrease in misoprostol efficacy: oral intake of a new misoprostol 400 microgram tablet is recommended in this case.

Paediatric population

Only limited data is available on the use of misoprostol in adolescents.

Method of administration

Misoprostol tablets are for oral use only and should not be administered by any other route of administration.

-

- Pregnancy not confirmed by ultrasound scan or biological tests

- Suspected ectopic pregnancy

- Contraindication for mifepristone

- Pregnancy beyond 49 days of amenorrhea

As misoprostol is used in combination with mifepristone, please refer to the contraindications for this mifepristone as well.

Warnings

Because of its abortifacient properties, misoprostol should never be used in a woman with an ongoing pregnancy who wants to complete it.

The age of the pregnancy must be determined from the questioning and the clinical examination of the patient. Uterine ultrasound is always recommended.

This method requires an active involvement of the woman who should be informed of the method's requirements:

- the necessity to combine treatment with mifepristone to be administered 36 - 48 hours before administration of this product,

- the need for a follow-up visit within 14 to 21 days after the intake of mifepristone in order to check for complete expulsion,

- the possible failure of the method, leading to a pregnancy termination by a second termination of pregnancy procedure.

Because of possible acute effects of misoprostol, women should be fully counselled regarding the likely signs and symptoms they may experience and have direct access to the treatment centre by telephone or local access.

In the case of a pregnancy occurring with an intra-uterine device in situ, this device must be removed before administration of mifepristone/misoprostol.

Risks related to the method:

The efficacy of the medical termination of pregnancy method decreases:

- When the labelled regimen is not strictly applied,

- With parity

Failures

The non-negligible risk of an on-going pregnancy occurs in 1% of the cases where the medical termination of pregnancy was within 49 days of amenorrhea and after oral administration. This risk makes the follow-up visit mandatory in order to check that the expulsion is completed.

In rare case of non-complete expulsion, a surgical revision may be necessary.

Bleeding

The patient must be informed of the occurrence of prolonged vaginal bleeding (an average of about 12 days or more after mifepristone intake) which may be heavy. Bleeding occurs in almost all cases and is not in anyway a proof of complete expulsion.

The bleeding can occur very quickly after misoprostol intake, and sometimes later:

- in 60%, expulsion occurs within 4 hours following misoprostol intake

- in 40%, expulsion occurs within 24 to 72 hours following misoprostol intake.

Rarely the expulsion may occur before misoprostol administration (around 3% of cases). This doesn't preclude the control visit in order to check for the complete expulsion and the uterine vacuity.

The patient should be informed not to travel far away from the prescribing centre as long as complete expulsion has not been recorded. She will receive precise instructions as to whom she should contact and where to go in the event of any problems emerging, particularly in the case of excessive vaginal bleeding. This is bleeding that lasts longer than 12 days and/or that is heavier than the normal menstrual bleeding.

Persistence of vaginal bleeding at this point could signify incomplete abortion, or an undiagnosed ectopic pregnancy, and appropriate treatment should be considered.

Since heavy bleeding requiring haemostatic curettage occurs in 0 to 1.4% of the cases during the medical method of pregnancy termination, special care should be given to patients with haemostatic disorders with hypocoagulability, or with anaemia. The decision to use the medical or the surgical method should be decided with specialised consultants according to the type of haemostatic disorder or the level of anaemia.

In the event of an ongoing pregnancy diagnosed after the follow-up visit, termination by a second termination of pregnancy procedure will be proposed to the woman.

Infection

Serious cases (including fatal cases) of toxic shock and septic shock following infections with atypical pathogens (Clostridium sordellii and perfringens, Klebsiella pneumoniae, Escherichia coli, group A Streptococcus), have been reported with the medical abortion, performed with unauthorised vaginal or buccal administration of misoprostol tablets.

Clinicians should be aware of this potentially fatal complication.

Teratogenicity

Patients who decide to continue the pregnancy after treatment must be informed of the risk of teratogenicity. Exposure of the foetus to misoprostol or mifeprostone increases the risk of developing Moebius syndrome and/or an amniotic band syndrome. A second termination of pregnancy procedure shall be considered. In case of continuation of the pregnancy close monitoring by ultrasound scan must be performed in specialised centres.

Precautions for use

Cardiovascular risk

Rare but serious cardiovascular accidents (myocardial infarction and/or spasm of the coronary arteries and severe hypotension) have been reported following the intra vaginal and intra muscular administration of a high dose of prostaglandin analogue, including misoprostol. For this reason, women with risk factors for cardiovascular disease (e.g. age over 35 years with chronic smoking, hyperlipidemia, diabetes) or established cardiovascular disease should be treated with caution.

Rhesus allo-immunisation

The medical termination of pregnancy requires rhesus determination and hence the prevention of rhesus allo-immunisation as well as other general measures taken usually during any termination of pregnancy.

Contraception initiation after medical termination of pregnancy

During clinical trials, new pregnancies occurred between embryo expulsion and the resumption of menses. Therefore, when a termination of pregnancy conducted by medical procedure is medically confirmed, it is recommended to start contraception immediately.

Other

The precautions related to mifepristone should also be followed.

No data showing an effect on the ability to drive are known. Dizziness could occur as a side effect. When driving or using machines one should take this possible side effect into account.

The side effects of misoprostol are usually an extension of the pharmacological action and of the drug bioavailability. The most common adverse reactions are gastrointestinal disorders e.g. nausea, vomiting, diarrhoea and abdominal pain.

The frequencies of occurrence of side effects are classified as follows:

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)

Very rare (<1/10.000)

Not known (cannot be estimated from the available data)

Infections and infestations

Common:

- Infection following abortion. Suspected or confirmed infections (endometritis, pelvic inflammatory disease) have been reported in less than 5% of women.

Very rare:

- Very rare cases of serious or fatal toxic and septic shocks (caused by Clostridium sordellii or perfringens, Klebsiella pneumoniae, Escherichia coli, group A Streptococcus), which can be with or without fever or other obvious symptoms of infection, have been reported with the use of unauthorised vaginal or buccal administration of misoprostol tablets. - Special warnings and special precautions for use).

Immune system disorders

Not known:

- Anaphylaxis, hypersensitivity.

Nervous system disorders

Rare:

- Headache.

Vascular disorders

Rare but serious cardiovascular accidents (myocardial infarction and/or spasm of the coronary arteries and severe hypotension) have been reported mainly with the use of non-authorised vaginal administration of misoprostol tablets.

Gastrointestinal disorders

Very common:

- Nausea, vomiting, diarrhoea (these gastro-intestinal effects related to prostaglandin use are frequently reported).

Common:

- Cramping, light or moderate.

Skin and subcutaneous tissue disorders

Uncommon

- Hypersensitivity: Skin rashes uncommon (0.2%).

Rare:

- Single cases of urticaria, erythroderma, erythema nodosum, toxic epidermal necrolysis have also been reported.

Very rare:

- Angioedema

Musculoskeletal and connective tissue disorders

Not known

- Back pain.

Reproductive system and breast disorders

Very common:

- Very common uterine contractions or cramping (10 to 45%) in the hours following misoprostol intake.

Common:

- Heavy bleeding occurs in about 5% of the cases and may require hemostatic curettage in up to 1.4% of the cases.

Congenital, familial, and genetic disorders

Rare:

- foetal death, birth defects.

General disorders and administration site conditions

Rare:

- Malaise, vagal symptoms (hot flushes, dizziness, chills), fever.

In the event of overdosage, symptomatic treatment and appropriate medical care should be done. Gastrointestinal haemorrhage, renal failure, acute rhabdomyolysis, uterine haemorrhage and death have been reported after a massive dose of 12 mg misoprostol.

Symptoms related to an overdose of misoprostol: sedation, tremor, convulsions, dyspnoea, abdominal pain, diarrhoea, fever, haemorrhage, spasm of coronary arteries, hypotension, and bradycardia.

Pharmacotherapeutic class: Other gynaecological drugs, oxytocics - prostaglandins

ATC code: G02AD06

Misoprostol (a synthetic analogue of prostaglandin E₁) is used in combination with mifepristone for the termination of pregnancies of ≤ 49 days of amenorrhea.

In the event of an early termination of pregnancy, the combination of mifepristone-misoprostol leads to an increase in the success rate to about 95% of the cases and accelerates the expulsion of the conceptus. The success rate is around 95 % when 600 mg mifepristone is combined with misoprostol 400 microgram orally up to 49 days of amenorrhea.

At the recommended dosage, misoprostol induces contractions of smooth muscle fibres of the myometrium and a relaxation of the cervix uteri. The uterotonic properties of misoprostol should facilitate the opening of the cervix uteri and the expulsion of intra-uterine remains.

At the recommended dosage, misoprostol should not involve cardiac, hepatic or renal undesirable effects.

Absorption

Misoprostol is rapidly absorbed following oral administration, with peak plasma levels of the active metabolite (misoprostol acid) occurring after about 30 minutes. The plasma elimination half-life of misoprostol acid is 20-40 minutes.

Distribution

The free acid of misoprostol is less than 90 % bound to plasma proteins. Misoprostol is metabolised by fatty acids-oxidising systems, present in several organs of the human body.

Elimination

After oral administration of ³H-misoprostol approximately 73 % of the radioactivity is excreted in urine and approximately 15 % in the faeces. Approximately 56 % of total radioactivity is eliminated within 8 hours via urine.

Administration of misoprostol with food does not change the bioavailability of misoprostol acid, but reduces the maximum plasma concentration due to a slower absorption rate.

Non-clinical data reveal no special hazard for humans based on conventional studies of safety pharmacology, repeated dose toxicity, genotoxicity, and carcinogenic potential.

At high repeated doses in rats and rabbits, misoprostol was foeto- and embryotoxic. No teratogenic potential was observed.

In single- and repeat-dose studies in dogs, rats and mice at multiples of the human dose, toxicological findings were consistent with the known pharmacological effects of the E-type prostaglandins, the main symptoms being diarrhoea, vomiting, mydriasis, tremors and hyperpyrexia.

Intra-uterine but not the intragastric delivery of misoprostol to rats significantly worsened mortality from Clostridium sordellii uterine infection, and impaired bacterial clearance in vivo.

Misoprostol has been shown to alter calcium homeostasis in neuro-2a cells and contribute to abnormal cell function in vitro. Imbalances in calcium homeostasis can potentially affect early neuronal development.

Microcrystalline cellulose,

Hypromellose,

Sodium starch glycolate (type A),

Hydrogenated castor oil.

Not applicable.

PVC-PCTFE/Alu blister: 1 year.

OPA-Alu-PVC/Alu blister: 24 months.

Store below 25°C.

Any tablet stored outside the blister or not used immediately has to be discarded.

1, 4, 16 or 40 tablet per carton box

Tablets are packed in perforated unit-dose PVC-PCTFE/Alu or OPA-Alu-PVC/Alu blister.

Not all pack sizes may be marketed

No special requirements.

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

EXELGYN

216, Boulevard Saint-Germain

75007 Paris

France

PL 16152/0003

18/01/2013

19/03/2014