Benadryl Injection (Diphenhydramine Injection) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

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May 25, 2012

Benadryl Injection

Scabies »

Scabies facts

Scabies is an itchy, highly contagious skin condition caused by an infestation by the itch mite Sarcoptes scabiei.
Direct skin-to-skin contact is the mode of transmission.
A severe and relentless itch is the predominant symptom of scabies.
Sexual contact is the most common form of transmission among sexually active young people, and scabies has been considered by many to be a sexually transmitted disease (STD).
Scabies produces a skin rash composed of small red bumps and blisters and affects specific areas of the body.
Treatment includes oral or topical scabicidal drugs.

What is scabies?

Scabies is an itchy, highly contagious skin disease caused by an infestation by the itch mite Sarcoptes scabiei. Mites are small eight-legged parasites (in contrast to insects, which have six legs). They are tiny, just 1/3 millimeter long, and burrow into the sk...

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Benadryl Injection

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Benadryl®
(diphenhydramine hydrochloride) Injection, USP

DRUG DESCRIPTION

Benadryl (diphenhydramine hydrochloride) is an antihistamine drug having the chemical name 2-(Diphenylmethoxy)-N,N-dimethylethylamine hydrochloride. It occurs as a white, crystalline powder, is freely soluble in water and alcohol and has a molecular weight of 291.82. The molecular formula is C₁₇H₂₁NO • HCl, and structural formula:

Benadryl in the parenteral form is a sterile, pyrogen-free solution available in a concentration of 50 mg of diphenhydramine hydrochloride per mL. The solutions for parenteral use have been adjusted to a pH between 5.0 and 6.0 with either sodium hydroxide or hydrochloric acid. The multidose Steri-Vials^® contain 0.1 mg/mL benzethonium chloride as a germicidal agent.

What are the precautions when taking diphenhydramine injection (Benadryl Injection)?

Before using diphenhydramine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (e.g., asthma, emphysema), glaucoma, heart problems, high blood pressure, liver disease, mental/mood disorders, seizures, stomach problems (e.g., ulcers, obstruction), overactive thyroid, difficulty urinating (e.g., enlarged prostate, urinary retention).

This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear...

Read All Potential Precautions of Benadryl Injection »

Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.