Our bears have been developed for the adult body, so we can only make a recommendation for adults. It is noted that children aged 4 to 13 years (depending on age and gender) should take 120 to 250 milligrams of magnesium per day. Adolescents from the age of 13 (depending on age and sex) have a daily requirement of 310 to 400 milligrams of magnesium. We recommend consulting your doctor before taking our bears and reducing the dose to 2 bears a day.