All melatonin pills are 3, 5,10 mg. There is no need to take that doses. It is too much. It is enough to start with 0,5-1 mg . That is the reason why to use liquid melatonin. This way you will save a money and protect your pineal gland from damage with long term use a high doses of melatonin. Otherwise recommendation to liquid natrol melatonin, very good quality and very efficient.