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Norethisterone We export and supply Norethisterone that is a molecule used in some combined oral contraceptive pills and in some progestogen only pills. As a progestogen, it can be used to treat premenstrual syndrome, painful periods, abnormal heavy bleeding, irregular periods, menopausal syndrome in combination with oestrogen, or to postpone a period. It was the first orally highly active progestin to be synthesized. It is often used as the related ester, norethisterone acetate.
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