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The Accidental Pill That Rewrote Hormones: Ethisterone's Secret Legacy

The Accidental Pill That Rewrote Hormones: Ethisterone's Secret Legacy

A single laboratory accident in 1938 produced ethisterone, the first orally active progestin that would remain in clinical use for over six decades yet cause masculinization in some female fetuses; how did a molecule meant to act like oral testosterone become a cornerstone of hormonal medicine-and what cost did that “wrong” design impose?

In this episode, we tell how four chemists in Berlin pursued convenience and accidentally created a drug that solved the needle problem for progesterone but carried unexpected androgenic…

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