birth control questions related to one of your prior posts

"The best male birth control I am aware of is cotton root bark. If taken regularly over a 6 month period it is said to cause permanent sterility in males. As an added benefit is increases the strength of orgasms by increasing oxytocin levels.

For females stone seed will do the same thing if taken daily over 6 months."

I was aware that about cotton root being used by females to cause abortion, from reading about slaves that would use it that worked on the plantations, but was unaware that it causes sterility in males. Also, I have never heard of stone seed.

Could you elaborate on what it is that causes the sterility? I have not found much info on either of them.

Thanks

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