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Table 1 Progestogens [1]

From: Effectiveness and acceptability of progestogens in combined oral contraceptives – a systematic review

Pregnanes Estranes Gonanes
   2nd generation 3rd generation
Chlormadinone acetate Norethindrone acetate dl-Norgestrel Desogestrel
Cyproterone acetate Ethynodiol diacetate Levonorgestrel Gestodene
Nomegestrol, Nestorone Lynestrenol   Norgestimate