A combination of Levonorgestrel and Quinestrol could be used for birth
control. It is a hormonal combination known to pervent pregnancy.
However, I would strongly advise against using these pills without
consulting a physician, of the following reasons:
(1) (Possible) side effects of Levonorgestrel and Quinestrol.
Levonorgestrel is a form of progesterone (a female hormone involved in
conception). Quinestrol is a form of estrogen. Both could adversly
affect the blood system (clotting, blood pressure), and therefore
blood tests (or at least consulting with a physician who knows one's
health problems) are required before taking it. There are naturally
other possible side effects, and there are also drugs that shouldn't
be taken while taking any of these. See for side effects:
Drugs.com "levonorgestrel Drug information"
Drugs.com, "Quinestrol drug information"
(2) Problems with a Chinese drug containing the same combination,
reported by the World Health Organisation (WHO):
"Once-a-month oral contraceptive tablets, manufactured in China, were
also widely available and were reported to have very high rates of
side-effects. These pills contain large doses of estrogen; most pills
contain 12 mg of levonorgestrel and 3 mg of quinestrol. In addition,
several years ago a WHO toxicology review panel refused to allow
studies of quinestranol on the grounds of inadequate toxicological
data regarding its safety." The WHO summarises that "The use of the
long acting (once-a-month) oral contraceptive tablet should be
(SOURCE: World Health Organisation, "Conclusions and Recommendations",
of _An assessment of the contraceptive method mix in Myanmar_,
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