But if they become bothersome, talk with your doctor or pharmacist. This product may contain inactive ingredients, which can cause allergic reactions or other problems. For children and adults aged 12 years and above, the mixing zantac and alcohol FDA recommend a starting dosage of 10 mg per day. A doctor may raise the daily dose by 10 mg each week if necessary. For children 6–12 years in age, a doctor may prescribe Adderall at […]