This medication is an antihistamine, prescribed for severe allergic conditions such as runny nose, sneezing, itchy, watery eyes. It is also used for itching of insect bites, sunburns, bee stings, poison ivy, poison oak and minor skin irritation.
Diphenhydramine lowers or stops the bodys reaction to the allergen. It helps treat a chemical imbalance. It calms the brain. It affects the throwing up (vomiting) center in the brain.
PO- Adult- The recommended dose is 25 mg to 50 mg (1 to 2 capsules). Child- The recommended dose is 12.5 mg to 25 mg (1 capsule). Topical: Apply a thin layer over the affected area as directed by your physician. It comes as a tablet to take by mouth, with or without food. It also comes as a cream, lotion and ointment to apply topically
Feeling lightheaded, sleepy, having blurred eyesight, or a change in thinking clearly. Avoid driving and doing other tasks or actions that call for you to be alert or have clear eyesight until you see how this drug affects you. Hard stools (constipation). Drinking more liquids, working out, or adding fiber to your diet may help. Talk with your doctor about a stool softener or laxative. Dry mouth. Good mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help. See a dentist often.
Take a missed dose as soon as you think about it. If it is close to the time for your next dose, skip the missed dose and go back to your normal time. Do not take 2 doses at the same time or extra doses. Many times this drug is taken on an as needed basis
Do not give Benadryl® Childrens Allergy Fastmelt® if your child is allergic to peanuts or soybeans. If you have an allergy to diphenhydramine or any other part of this drug. Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs. If you have asthma. If you are breast-feeding.
If you think there was an overdose, call your local poison control center or ER right away. Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue or gray skin color; seizures; or swelling of face, lips, tongue, or throat. Not able to pass urine. Feeling very tired or weak. Any rash. Side effect or health problem is not better or you are feeling worse.
Sometimes drugs are not safe when you take them with certain other drugs and food. - Taking them together can cause bad side effects. - Be sure to talk to your doctor about all the drugs you take.
Store it at room temperature.
Category B : Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women OR Animal studies have shown an adverse effect, but adequate and well-controlled studies in pregnant women have failed to demonstrate a risk to the fetus in any trimester.
Antihistamines & Antiallergics
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