My 13 year old son took one pill 2 times per day, which corresponds to the adult dose. It contains 6 types of magnesium: glycerophosphate, marine, L-pidolate citrate, gluconate and lactate + Taurine + B6. It took nearly three months from October. At the moment, no side effects as some other magnesium (on transit). By cons boy was completely depressed to Christmas holidays Yet it is under magnesium from its 9 years and it is never found in such a state We brought him to a child psychiatrist with whom he was able to talk According to this specialist our child had planned to end sessions with the doctor did not last long because we changed him magnesium He got better fast enough I read that there was a magnesium salt that was depressing ++ + but I can not remember which 6 So see on a search engine or watch or be alert to the person to whom you give