Comparing Phenergan vs Promethazine DM
| Phenergan (promethazine) | Promethazine DM (dextromethorphan / promethazine) |
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| Phenergan (promethazine) | Promethazine DM (dextromethorphan / promethazine) |
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Prescription only
Phenergan may be used to relieve allergy symptoms, nausea, or as a sleeping aid. Sedation is the main side effect. Occasionally, paradoxical reactions (the opposite of what is to be expected) may... View more |
Prescription only
Prescribed for Cough, Allergic Rhinitis, Cold Symptoms. Promethazine DM may also be used for purposes not listed in this medication guide. |
Related suggestions Allergic Rhinitis
Popular comparisons
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| More about Phenergan (promethazine) | More about Promethazine DM (dextromethorphan / promethazine) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Phenergan has an average rating of 7.4 out of 10 from a total of 151 ratings on Drugs.com. 69% of reviewers reported a positive effect, while 21% reported a negative effect. |
Promethazine DM has an average rating of 5.7 out of 10 from a total of 43 ratings on Drugs.com. 44% of reviewers reported a positive effect, while 40% reported a negative effect. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | |||||||||||||||||
View all Phenergan side effects |
View all Promethazine DM side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
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N/A |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Phenergan prices |
View all Promethazine DM prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Other promethazine brands include: Adgan, Anergan 50, Antinaus 50, Phenadoz, Promethegan |
N/A |
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| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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16 hours |
16 hours |
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| CSA Schedule 1 View glossary of CSA 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 C
Risk cannot be ruled out
See the full pregnancy warnings document. |
Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 688 drugs are known to interact with Phenergan:
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A total of 751 drugs are known to interact with Promethazine DM:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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March 29, 1951 |
February 14, 2006 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
N/A |
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| Related Treatment Guide | |||||||||||||||||
1 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.