According to healthnatura, the maximum amount of progesterone for the OTC market is 3mg but Ona is selling a concentrated oil product that contains ~5mg per drop. I would guess the FDA would be / is keeping track of this sort of thing, but do not know how to go about confirming who is correct beyond whatever the respective vendor happens to say.
Is there any definitive documentation on the subject?
Is there any definitive documentation on the subject?