I give tmg to my kids age eight a girl and four for a boy what's the correct dosage?

TMG: There is no reason children should be receiving tmg (trimethylglycine). The supposed health benefits are better achieved through eating of unprocessed fruits and vegetables (broccoli, spinach, etc). I personally would not give my own children any "natural" supplements - the whole supplement industry is unregulated and you don't know what kind of chemicals and impurities they're adding.