Melatonin sits outside any EU-harmonised framework for food supplements. Member states set their own rules, and those rules differ considerably from one country to the next.
No Bulgarian national maximum for melatonin was identified. Bulgaria's food supplements ordinance, notified to and accepted by the European Commission, sets upper levels for vitamins and minerals; other substances such as melatonin are left to the general regime without a published cap. No medicinal reclassification of melatonin at any dose was found.
Bulgarian pharmacies and supplement retailers openly sell melatonin food supplements at 3 mg, 4 mg, 5 mg and 10 mg per daily dose, which is consistent with the absence of a national ceiling.
