Diphenhydramine (Benadryl) Dosage Table For treatment of allergic reactions, nasal allergies, and hives. AGE LIMITS: Do not use under 1 year of age unless directed by provider are more accurate than teaspoons. If possible, use the syringe or dropper that comes with the medicine. If no Diphenhydramine (also known as Benadryl®) is a medicine used to treat allergic reactions, hives and allergies that affect the nose (called nasal allergies). It is an over-the-counter medicine, meaning that you can get it without a doctor's prescription. There are other medicines like diphenhydramine that might be safer for young children. That is why I want to talk to you today about Diphenhydramine, commonly known by the brand name Benadryl. Understanding the correct Benadryl dosage children need is crucial for their safety and recovery. It is a staple in many medicine cabinets, but it is not a “cure-all” and certainly requires respect regarding dosing. Key takeaways: Benadryl (diphenhydramine) is an over-the-counter (OTC) antihistamine used to treat allergy symptoms, such as sneezing and runny nose. It’s safe for most adults and children ages 6 and older to take at recommended dosages. The typical adult Benadryl dosage is 1 to 2 tablets or capsules by mouth every 4 to 6 hours as needed. Find BENADRYL® dosage information for adults, children, and toddlers and learn how much you and your family should take with our allergy medicine product-dosing guide. Find out how much Benadryl adults and children can safely take, plus essential safety tips and side effects to watch for in this medically-reviewed guide. Giving your child Benadryl? Find the recommended amount of Benadryl to give your child based on age and weight using the St. Louis Children's Hospital Benadryl dosage chart. Medscape - Hypersensitivity reactions, insomnia, antihistamine-specific dosing for Benadryl, Nytol (diphenhydramine), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Benadryl is a brand) name for diphenhydramine hydrochloride, a sedating antihistamine used to treat allergies, sleep problems, and motion sickness. The recommended dosage of Benadryl by condition is as follows. Detailed Diphenhydramine dosage information for adults and children. Includes dosages for Insomnia, Allergic Rhinitis, Allergic Reaction and more; plus renal, liver and dialysis adjustments.