Comparing Benadryl vs Diphenhydramine
| Benadryl | Diphenhydramine |
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| Benadryl (diphenhydramine) | Diphenhydramine |
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Prescription and OTC
Benadryl is an antihistamine that can be used to treat allergic reactions, relieve motion sickness, as a sleep aid, and relieve some symptoms of Parkinson's disease. Sedation is a common side effect... View more |
Prescription and OTC
Diphenhydramine is an antihistamine that can be used to treat allergic reactions, relieve motion sickness, as a sleep aid, and to relieve some symptoms of Parkinson's disease. Sedation is a common... View more |
Related suggestions Allergic Rhinitis
Nausea/Vomiting
Urticaria
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| More about Benadryl (diphenhydramine) | More about Diphenhydramine | ||||||||||||||||
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| Ratings & Reviews | |||||||||||||||||
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Benadryl has an average rating of 7.1 out of 10 from a total of 71 ratings on Drugs.com. 61% of reviewers reported a positive effect, while 20% reported a negative effect. |
Diphenhydramine has an average rating of 5.5 out of 10 from a total of 503 ratings on Drugs.com. 43% of reviewers reported a positive effect, while 41% reported a negative effect. |
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| Side Effects | |||||||||||||||||
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See also: Benadryl side effects in more detail. |
See also: diphenhydramine side effects in more detail. |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Benadryl prices and generic prices |
View all diphenhydramine prices |
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| Dosage Form(s) Available | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Other diphenhydramine brands include: Aler-Dryl, Aler-Tab, Aller-G-Time, Allergia-C, Allermax, Altaryl, Banaril, Banophen, Beldin, Belix, Ben-Tann, Benadryl Allergy, Benadryl Children's Allergy, Benahist-10, Benahist-50, Benoject-50, Buckley's Bedtime, Bydramine, Calm-Aid, Complete Allergy Relief, Compoz Nighttime Sleep Aid, ConRx Allergy, Dicopanol, Diphedryl, Diphen, Diphen AF, Diphen Cough, Diphenadryl, Diphendryl, Diphenhist, Diphenmax, Diphenydramine Quick Melt, Diphenyl, Diphenylin, Dormin, DPH, Dytan, Dytuss, Genahist, Help I Can't Sleep, Histaprin, Hydramine, Hydramine Compound, Hydramine Cough Syrup, Hyrexin, Miles Nervine, Nytol, Nytol Caplet, Nytol QuickCaps, Pharbedryl, Scot-Tussin Allergy, Siladryl Allergy, Silphen Cough, Simply Sleep, Sleep Tab II, Sleep-ettes D, Sleepinal, Sleepwell 2-nite, Snooze Fast, Sominex, Sominex Maximum Strength Caplet, Trux-adryl, Twilite, Unisom Liquid, Unisom SleepGels, Unisom SleepMelts, Unisom SleepMinis, Valu-Dryl, Vanamine PD, Vicks QlearQuil Nighttime Allergy Relief, Z-Sleep, ZzzQuil View more | Aler-Dryl, Aler-Tab, Aller-G-Time, Allergia-C, Allermax, Altaryl, Banaril, Banophen, Beldin, Belix, Ben-Tann, Benadryl, Benadryl Allergy, Benadryl Children's Allergy, Benahist-10, Benahist-50, Benoject-50, Buckley's Bedtime, Bydramine, Calm-Aid, Complete Allergy Relief, Compoz Nighttime Sleep Aid, ConRx Allergy, Dicopanol, Diphedryl, Diphen, Diphen AF, Diphen Cough, Diphenadryl, Diphendryl, Diphenhist, Diphenmax, Diphenydramine Quick Melt, Diphenyl, Diphenylin, Dormin, DPH, Dytan, Dytuss, Genahist, Help I Can't Sleep, Histaprin, Hydramine, Hydramine Compound, Hydramine Cough Syrup, Hyrexin, Miles Nervine, Nytol, Nytol Caplet, Nytol QuickCaps, Pharbedryl, Scot-Tussin Allergy, Siladryl Allergy, Silphen Cough, Simply Sleep, Sleep Tab II, Sleep-ettes D, Sleepinal, Sleepwell 2-nite, Snooze Fast, Sominex, Sominex Maximum Strength Caplet, Trux-adryl, Twilite, Unisom Liquid, Unisom SleepGels, Unisom SleepMelts, Unisom SleepMinis, Valu-Dryl, Vanamine PD, Vicks QlearQuil Nighttime Allergy Relief, Z-Sleep, ZzzQuil View more | ||||||||||||||||
| Half Life The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. | |||||||||||||||||
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9.3 hours |
9.3 hours |
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| CSA Schedule ** View glossary of terms | |||||||||||||||||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||||||||||
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Category B
No proven risk in humans
See the full pregnancy warnings document. |
Category B
No proven risk in humans
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 414 drugs are known to interact with Benadryl:
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A total of 414 drugs are known to interact with diphenhydramine:
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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March 04, 1946 |
March 04, 1946 |
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| WADA Class View World Anti-Doping Agency classifications. | |||||||||||||||||
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N/A |
N/A |
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| Patient resources | |||||||||||||||||
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N/A |
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| Related Treatment Guide | |||||||||||||||||
** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.