Clomiphene citrate (Ovuclon) is the first non-steroidal preparation (a mixture of 2 geometric isomers-Cis [Zuclomiphene] & Trans [Enclomiphene]) that in many patients induces ovulation, which has failed previously. Clomiphene citrate stimulates the increased secretion of both gonadotropins (FSH & LH) from pituitary, which induce maturation of the ovarian follicle, ovulation & subsequent normal function of the corpus luteum. It does not interfere with the other functions of pituitary & thyroid & has no progesteronic or androgenic effect. Clomiphene citrate is taken orally & readily absorbed from gastro intestinal tract. Its biological half-life in plasma is 5-7 days. It is partially metabolized in the liver & through the bile is excreted in the faeces. A part is reabsorbed & enters into enterohepatic recirculation-pool.
Ovuclon 100 Tablet
The usual dose for the first course of Clomiphene is 50 mg (1 tablet) a day for 5 days in the early follicular phase of the cycle, following normal menstruation or a progestagen-induced withdrawal bleeding. Many regimes have been used, but most common begin either on day 2 or day 5. If this dose induces ovulation, there is no need to increase the dose in the following courses. If this dose induces ovulation, but pregnancy does not occur, stimulation with Clomiphene Citrate is to be continued, but up to 6 stimulative courses. If the first course does not induce ovulation, the second course should be started with 100 mg a day (2 tablets of 50 mg taken in a single dose) for 5 days. If ovulation is not induced, 2 more stimulative courses of the same dose should be given. If the next three stimulative courses do not produce a successful result, the therapeutic trial is considered to be finished. If ovulation is induced, but pregnancy does not occur, maximum 6 courses with Clomiphene are recommended. However, if menstrual bleeding does not occur, the patient should be examined carefully for the possible pregnancy, and the next course of therapy should be delayed until the correct diagnosis has been determined.