<unk>  is a form of hormonal contraception and may refer to: * Progestogen-only<unk>  * Combined<unk>  Estrogen-only<unk> , for instance estradiol undecylate, has also been studied, but has not been marketed.
Injectable birth control
Combined injectable birth control
Long-acting reversible contraception
Heat-based contraception
Intrauterine device
Male contraceptive
Combined hormonal contraception
Vas-occlusive contraception