since its chemical structure is has been solved, it's produced synthetically. I'm not sure if there are any natural forms on the market, but if there are, I would avoid them - they are extracted from the pineal gland of animals and may be contaminated.
since its chemical structure is has been solved, it's produced synthetically. I'm not sure if there are any natural forms on the market, but if there are, I would avoid them - they are extracted from the pineal gland of animals and may be contaminated.