I have been using melatonin with my son and myself to aide in sleep for about a year now taking breaks with the medication at least once a month as directed. But I ve been hearing a lot of info on possible long term side effects to the medication. So I purchased some magnesium citrate and want to start using them but again have been mixed information. Me and my son are also vitamin D deficit so we take vital D every day with food we were taking vitamin D and calcium but to b honest found it on sale with out the calcium but find that there seems to be a difference in its effectiveness. I have a disorder where I cannot properly digest, milk, fruits, vegetables, nuts. Sucks lol. So my vitamin intake is essential and of course I don t want to cause my son any long term harm