There isn't any set limit for kids, however the American Academy of Pediatrics (AAP) discourages the intake of caffeine along with other stimulants by young children and adolescents. On top of that, broaden your selection beyond just mushrooms to determine what other adaptogens can benefit your health and Life style. https://gregoryibthu.mdkblog.com/38156882/5-essential-elements-for-cordyceps