Recent Examples of progestin from the Web
Clinical trials in the ensuing decades showed that dosing men with testosterone or combinations of testosterone and progestin temporarily inhibited sperm production, but that the strategy had drawbacks.
The type of progestin, on the other hand, can vary since different pharmaceutical companies use different kinds.
Some IUDs contain the hormone levonorgestrel, a kind of progestin, which helps decrease or even eliminate heavy menstrual bleeding, a common problem for women in their 40s.
The progestin-containing IUD, implant, shot or minipill all work well for this.
Women can ovulate with a Mirena, however, basically sperm aren't 'allowed access into the uterus' because of the progestin in the device—
Lemonaid, available in seven states, insists that women 35 and older receive pills containing only progestin, since pills containing estrogen may increase heart risks for some women in that age group.
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