Pharmacist's Verdict
Benadryl is an effective, fast-acting medication for sudden allergy symptoms and occasional sleeplessness, but its strong drowsiness and other side effects make it less ideal for regular daytime use compared to newer options.
Ingredient Analysis
Diphenhydramine Hydrochloride
Pros & Cons
Pros
- Very effective at quickly relieving common allergy symptoms like sneezing, runny nose, itchy eyes, and hives.
- Can be used as a temporary aid for occasional sleeplessness due to its sedating effect.
- Widely available and generally inexpensive.
- Can help calm itching from bug bites or minor skin irritations.
Cons
- Causes significant drowsiness, making it unsafe to drive or operate machinery, and should not be used when alertness is needed.
- Can cause other side effects like dry mouth, blurred vision, constipation, and difficulty urinating, especially in older adults.
- Short-acting, meaning you may need to take it multiple times a day for continuous relief.
- Interacts with alcohol and other medications that cause drowsiness (e.g., sedatives, tranquilizers), increasing the risk of side effects.
- Not recommended for long-term use as a sleep aid and should be used with caution in children and older adults due to increased sensitivity to side effects; consult a doctor before use if you have glaucoma, an enlarged prostate, or breathing problems like chronic bronchitis.
Safety Information
Warnings
Warnings Do not use to make a child sleepy with any other product containing diphenhydramine, even one used on skin Ask a doctor before use if the child has a breathing problem such as chronic bronchitis glaucoma Ask a doctor or pharmacist before use if the child is taking sedatives or tranquilizers When using this product marked drowsiness may occur sedatives and tranquilizers may increase drowsiness excitability may occur, especially in children Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away. (1-800-222-1222)
Is Benadryl safe for you?
See pregnancy, interactions, and common concerns answered in our pharmacist safety FAQ.
Read safety review →References
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FDA DailyMed: Childrens Allergy Relief · FDA
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FDA DailyMed: Childrens Benadryl DYE-FREE ALLERGY · FDA
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