Harmogen

What is it?

A hormonal oestrogen preparation produced in the form of long, peach-coloured, scored tablets containing 1.5mg estropipate (equivalent to 0.93mg of oestrone), marked 3773 and U.

Medical Uses

Hormonal replacement therapy in menopausal women and prevention of osteoporosis following menopause.

Dosage

Adults, 1 to 2 tablets each day, along with a progestogen preparation for the last 10 to 13 days of each 28 day cycle in women who have not had a hysterectomy.

Special Care

Hypertension, severe kidney disease receiving dialysis, Raynaud's disease, diabetes, multiple sclerosis, asthma, varicose veins, elevated levels of prolactin (a hormone) in the blood (hyperprolactinaemia). Risk of thrombosis increases with smoking, age and obesity. Blood pressure, breasts and pelvic organs should be checked during period of treatment.

Avoid Use

Pregnancy, heart and circulatory diseases, angina, sickle cell anaemia, pulmonary hypertension. Also, hormone-dependent cancers, undiagnosed vaginal bleeding, chorea, liver disease, history of cholestatic jaundice of pregnancy, infectious hepatitis, Dublin-Johnson syndrome, Rotor syndrome, recent trophoblastic disease.

Possible Drug and Food Interactions

Phenytoin, carbamazepine, tetracyclines, primidone, chloral hydrate, glutethimide, phenylbutazone, rifampicin, griseofulvin, ampicillin, dichloralphenazone, ethosuximide, barbiturates, St John's Wort.

Known Side Effects

Feeling of bloatedness due to fluid retention, leg pains, breast enlargement, erosion of cervix, muscular cramps, weight gain, breakthrough bleeding, depression, headaches, vaginal discharge, loss of libido, nausea, brown patches on skin (chloasma). Stop drug immediately in event of pregnancy, if frequent, severe headaches occur or signs of thromboses, severe pain in upper abdominal region, enlarged liver, jaundice, rise in blood pressure, severe depression, increased number of fits. Drug should be discontinued 6 weeks before major planned surgery and re-started 2 weeks afterwards, as long as woman is fully mobile. Should be discontinued during long periods of immobility.