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Drug Interactions and Side Effects of Benadryl

Benadryl has 29 Side Effects total
5 are Life Threatening
2 Occur Most Frequently

Uses of Benadryl
 
Benadryl is also known by the generic name Diphenhydramine Hcl


USES:
Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes/nose/throat, cough, runny nose and sneezing. It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness. Diphenhydramine can also be used to help you relax and fall asleep.

This medication works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Its drying effects on such symptoms as watery eyes and runny nose are caused by blocking another natural substance made by your body (acetylcholine).

Cough-and-cold products have not been shown to be safe or effective in children younger than 6 years. Therefore, do not use this product to treat cold symptoms in children younger than 6 years unless specifically directed by the doctor. Some products (such as long-acting tablets/capsules) are not recommended for use in children younger than 12 years. Ask your doctor or pharmacist for more details about using your product safely.

These products do not cure or shorten the length of the common cold and may cause serious side effects. To decrease the risk for serious side effects, carefully follow all dosage directions. Do not use this product to make a child sleepy. Do not give other cough-and-cold medication that might contain the same or similar ingredients (see also Drug Interactions section). Ask the doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking enough fluids, using a humidifier or saline nose drops/spray).


Benadryl has 5 Life Threatening (Critical) Side Effects
 
Critical Seriousness - Blood Disorder - Blood Dyscrasias is a Life Threatening Side Effect of Benadryl
Critical Seriousness - Extra Heartbeat - Extrasystoles is a Life Threatening Side Effect of Benadryl
Critical Seriousness - Fit - Tonic Clonic Seizure is a Life Threatening Side Effect of Benadryl
Critical Seriousness - Hallucination - Hallucinations is a Life Threatening Side Effect of Benadryl
Critical Seriousness - Reaction due to an Allergy - Allergic Reactions is a Life Threatening Side Effect of Benadryl

Benadryl has 2 Most Frequently Occurring Side Effects
 
An Increase in the Thickness of Lung Secretions - Thick Bronchial Secretions is a Frequently Occurring Side Effect of Benadryl
Drowsiness - Drowsy is a Frequently Occurring Side Effect of Benadryl

Benadryl Drug-Drug Interactions
 
Benadryl has interactions of severe seriousness with 0 drug(s):

Benadryl has interactions of serious seriousness with 3 drug(s).

Benadryl has interactions of moderate seriousness with 0 drug(s).

Benadryl has interactions of unknown seriousness with 0 drug(s).

Benadryl has 9 Condition Contraindications
 
If you have any of these Conditions then you should carefully evaluate the risks of taking Benadryl.

Benadryl Oral Contraindications
(grouped by decreasing seriouosness level)

Relative Contraindications 

Benign Prostatic Hypertrophy - Enlarged Prostate is a contraindication of Benadryl.

Bladder Outflow Obstruction - Blockage of Urinary Bladder is a contraindication of Benadryl.

Chronic Idiopathic Constipation - Chronic Difficulty having a Bowel Movement is a contraindication of Benadryl.

Narrow Angle Glaucoma - Closed Angle Glaucoma is a contraindication of Benadryl.

Stenosing Peptic Ulcer is a contraindication of Benadryl.

Urinary Retention - Cannot Empty Bladder is a contraindication of Benadryl.

Contraindication Warnings 

Hypertension - High Blood Pressure is a contraindication of Benadryl.

Hyperthyroidism - Overactive Thyroid Gland is a contraindication of Benadryl.

Ocular Hypertension - Increased Pressure in the Eye is a contraindication of Benadryl.

Benadryl has 124 related brands and strengths:
 
Aler-Cap 25 Mg Cap

Aler-Tab 25 Mg Tab

Allergy (Diphenhydramine) 12.5 Mg/5 Ml Oral Liquid

Allergy (Diphenhydramine) 25 Mg Cap

Allergy (Diphenhydramine) 25 Mg Tab

Allergy Cream 2 % Topical

Allergy Medication 12.5 Mg/5 Ml Oral Liquid

Allergy Medication 25 Mg Cap

Allergy Medicine 12.5 Mg/5 Ml Oral Liquid

Allergy Medicine 25 Mg Cap

Allergy Medicine 25 Mg Tab

Allergy Relief 12.5 Mg/5 Ml Oral Liquid

Allergy Relief 25 Mg Cap

Allergy Relief 25 Mg Tab

Anti-Itch 2 % Topical Cream

Anti-Itch 2 % Topical Gel

Anti-Itch 2 % Topical Spray

Anti-Itch Maximum Strength 2 % Topical Spray

Antihist 12.5 Mg/5 Ml Elixir

Antihistamine 25 Mg Cap

Antihistamine 25 Mg Tab

Banophen 12.5 Mg/5 Ml Oral Liquid

Banophen 25 Mg Cap

Banophen 25 Mg Tab

Banophen Allergy 12.5 Mg/5 Ml Oral Liquid

Benadryl 25 Mg Cap

Benadryl Allergy 12.5 Mg/5 Ml Oral Liquid

Benadryl Allergy 25 Mg Tab

Benadryl Allergy Quick Dissolve 25 Mg Oral Strips

Benadryl Fastmelt 12.5 Mg Chewable Tab

Benadryl Itch Stopping 2 % Topical Gel

Benadryl Maximum Strength 2 % Topical Spray

Children's Allergy 12.5 Mg Chewable Tab

Children's Allergy 12.5 Mg/5 Ml Elixir

Children's Allergy 12.5 Mg/5 Ml Oral Liquid

Children's Benadryl Allergy 12.5 Mg/5 Ml Prefilled Spoon

Children's Wal-Dryl Allergy 12.5 Mg/5 Ml Oral Liquid

Complete Allergy 12.5 Mg Chewable Tab

Complete Allergy 12.5 Mg/5 Ml Oral Liquid

Complete Allergy 25 Mg Cap

Complete Allergy 25 Mg Tab

Complete Allergy Medicine 25 Mg Cap

Complete Allergy Medicine 25 Mg Tab

Complete Allergy Medicine 50 Mg Cap

Compoz 25 Mg Tab

Compoz 50 Mg Tab

Derma-Pax 0.5 % Lotion

Dicopanol 25 Mg/5 Ml Oral Susp

Diphedryl 12.5 Mg/5 Ml Oral Liquid

Diphedryl 25 Mg Cap

Diphedryl 25 Mg Tab

Diphedryl Allergy 12.5 Mg/5 Ml Oral Liquid

Diphen 25 Mg Cap

Diphenhist 12.5 Mg/5 Ml Oral Liquid

Diphenhist 25 Mg Cap

Diphenhist 25 Mg Tab

Diphenhist 50 Mg Tab

Diphenhydramine 0.5 % Lotion

Diphenhydramine 12.5 Mg Chewable Tab

Diphenhydramine 12.5 Mg Oral Strips

Diphenhydramine 12.5 Mg/5 Ml Elixir

Diphenhydramine 12.5 Mg/5 Ml Oral Liquid

Diphenhydramine 12.5 Mg/5 Ml Prefilled Spoon

Diphenhydramine 12.5 Mg/5 Ml Syrup

Diphenhydramine 2 % Topical Cream

Diphenhydramine 2 % Topical Gel

Diphenhydramine 2 % Topical Spray

Diphenhydramine 25 Mg Cap

Diphenhydramine 25 Mg Oral Strips

Diphenhydramine 25 Mg Tab

Diphenhydramine 25 Mg Tab, Rapid Dissolve

Diphenhydramine 25 Mg/5 Ml Oral Susp

Diphenhydramine 50 Mg Cap

Diphenhydramine 50 Mg Tab

Diphenhydramine 50 Mg/Ml Injection

Diphenhydramine 50 Mg/Ml Syringe

Dytuss 12.5 Mg/5 Ml Syrup

Itch Relief 2 % Topical Gel

Itch Relief 2 % Topical Spray

Medi-Phedryl 12.5 Mg/5 Ml Oral Liquid

Medi-Phedryl 25 Mg Cap

Nightime Sleep 50 Mg Cap

Nighttime Sleep Aid (Diphenhydramine) 25 Mg Tab

Nighttime Sleep Aid (Diphenhydramine) 50 Mg Cap

Nytol 25 Mg Tab

Nytol 50 Mg Cap

Q-Dryl 12.5 Mg/5 Ml Oral Liquid

Q-Dryl 25 Mg Cap

Quenalin 12.5 Mg/5 Ml Syrup

Rest Simply 25 Mg Tab

Rest Simply Nighttime Sleep 25 Mg Tab

Restfully Sleep 25 Mg Tab

Siladryl Sa 12.5 Mg/5 Ml Oral Liquid

Silphen Cough 12.5 Mg/5 Ml Syrup

Simply Allergy 25 Mg Tab

Simply Sleep 25 Mg Tab

Sleep 25 Mg Tab

Sleep Aid (Diphenhydramine) 25 Mg Tab

Sleep Aid (Diphenhydramine) 50 Mg Cap

Sleep Aid Max Strength (Diphenhydramine) 50 Mg Cap

Sleep Ii 25 Mg Tab

Sleep Tablet (Diphenhydramine) 25 Mg Tab

Sleep-Eze 3 25 Mg Tab

Sleep-Tabs 25 Mg Tab

Sleepgels 50 Mg Cap

Sleeping 50 Mg Cap

Sominex 25 Mg Tab

Sominex Maximum Strength 50 Mg Tab

Theraflu Multi Symptom 25 Mg Oral Strips

Triaminic Allergy 12.5 Mg Oral Strips

Triaminic Cough/Runny Nose 12.5 Mg Oral Strips

Unisom Sleepgels 50 Mg Cap

Unisom Sleepmelts 25 Mg

Valu-Dryl 12.5 Mg Chewable Tab

Valu-Dryl Allergy 12.5 Mg/5 Ml Oral Liquid

Valu-Dryl Allergy 25 Mg Cap

Valu-Dryl Allergy 25 Mg Tab

Valu-Dryl Anti-Itch 2 % Topical Cream

Valu-Dryl Child's Allergy 12.5 Mg/5 Ml Elixir

Wal-Dryl Allergy 12.5 Mg/5 Ml Oral Liquid

Wal-Dryl Allergy 25 Mg Cap

Wal-Dryl Allergy 25 Mg Tab

Wal-Dryl Anti-Itch 2 % Topical Spray

Wal-Som 50 Mg Cap

Benadryl - Symptoms of overdose may include
If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include large pupils, flushing, fever, hallucinations, weakness, shaking (tremor), muscle twitching, loss of consciousness, and seizures. In children, excitement may occur first, and may be followed by loss of coordination, drowsiness, loss of consciousness, and seizures.

Contact poison control
If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly.

IMPORTANT NOTICE: The drug information contained in this application is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not exhaustive and is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment. The display and use of this drug information is subject to express terms of use. By continuing to view the drug information on this site, you agree to abide by such terms of use.
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