Depending on the tonic, we recommend a half dose for children aged 4+ mixed with water (or other beverage). Sleep, Microbe and Immunity tonics and our Male Potency and Feminine Energy are generally not appropriate for children under 12, unless with specific advice from a practitioner. Chaga and Reishi are great options for developing kids. Some herbs are not recommended for use in children, and we recommend consulting your health practitioner for what's right for your family.