Comparison of Norinyl and Combination-5
Khan, A.R.; Swenson, I.; Jahan, F.A.
Bangladesh Medical Research Council Bulletin 3(2): 108-116
1977
ISSN/ISBN: 0377-9238 PMID: 615586 Document Number: 439708
There are numerous brands of oral contraceptives in the international pharmaceutical market each claiming its superiority over the others. Selection of one or more suitable brands in preference to the others has been one of the most confusing tasks for the persons involved in family planning programme. Major differences in side-effects amongst the different brands of pill may be either due to different amounts of estrogen and/or progesterone, or different potency of the specific estrogen and/or progesterone contained in the brands. Although brands of pills may contain the same quantities of estrogen and progestogen, different levels of their estrogenic, progestogenic and androgenic potency may give rise to different effects on the human body (Dickey, 1973). Thus, oral contraceptives containing similar amounts of estrogen and progesterone may actually produce side-effects of a different nature and magnitude.
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