Why not just use the progestin Provera as prescribed by most doctors?
Progesterone is preferable to the synthetic progestins such as Provera, because it is natural to the body and has no undesirable side effects when used as directed. If you have any doubts about how different progesterone is from the progestins, remember that the placenta produces 300-400 mg of progesterone daily during the last few months of pregnancy, so we know that such levels are safe for the developing baby. But progestins, even at fractions of this dose, can cause birth defects. The progestins also cause many other side effects, including partial loss of vision, breast cancer in test dogs, an increased risk of strokes, fluid retention, migraine headaches, asthma, cardiac irregularities and depression.
