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As there are various strengths and forms (e.g., children's liquid, elixir) of diphenhydramine, talk to your doctor or pharmacist before giving this medication to a child. This medication should not be used for children under the age of 2 years unless recommended by your physician.ĭo not give diphenhydramine capsules or caplets to children younger than 12 years of age unless directed to do so by your child's doctor. If you are not sure, ask your health care professional to calculate the dose. Always read the label on the product you have to ensure the correct dose. Take diphenhydramine exactly as directed by your doctor or pharmacist.Ĭhildren: The dose of diphenhydramine for children varies based on age and body weight. As there are various strengths and forms of diphenhydramine, talk to your doctor or pharmacist before taking this medication. No more than 300 mg should be taken in a 24-hour period. How should I use this medication?Īdults and children 12 years of age and older: The usual dose is 25 mg to 50 mg taken by mouth 3 or 4 times a day. This medication is available as a 50 mg tablet.Įach 5 mL of liquid contains 6.25 mg of diphenhydramine.Įach 5 mL of liquid contains 12.5 mg of diphenhydramine. This medication is available as a 50 mg tablet. This medication is available as a 12.5 mg chewable tablet. This medication is available as a 25 mg capsule. This medication is available as a 25 mg caplet.

What form(s) does this medication come in? Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are using this medication, speak to your doctor or pharmacist.ĭo not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to use this medication if their doctor or pharmacist has not recommended it. As well, some forms of this medication may not be used for all of the conditions discussed here. This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. It usually starts to work within one hour. This medication works by blocking the effects of histamine, a substance released by the body involved in allergies. The cream form of this medication is used for the relief of swelling and itching caused by insect bites, poison ivy, poison oak, mild cases of sunburn, and other minor skin irritations. Antihistamines are used to treat symptoms caused by allergies, including itchy and watery eyes, sneezing, runny nose, and skin rash and irritations. How does this medication work? What will it do for me?ĭiphenhydramine belongs to a group of medications known as antihistamines.