Comparing Promethazine DM vs Robitussin Nighttime Cough DM
| Promethazine DM (dextromethorphan / promethazine) | Robitussin Nighttime Cough DM (dextromethorphan / doxylamine) |
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| Promethazine DM (dextromethorphan / promethazine) | Robitussin Nighttime Cough DM (dextromethorphan / doxylamine) |
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Prescription only
Prescribed for Cough, Allergic Rhinitis, Cold Symptoms. Promethazine DM may also be used for purposes not listed in this medication guide. |
Over-the-counter
Prescribed for Cough and Nasal Congestion, Cough. Robitussin Nighttime Cough DM may also be used for purposes not listed in this medication guide. |
Related suggestions |
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| More about Promethazine DM (dextromethorphan / promethazine) | More about Robitussin Nighttime Cough DM (dextromethorphan / doxylamine) | ||||||||
| Ratings & Reviews | |||||||||
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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. |
Be the first to share your experience with this drug. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | |||||||||
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View all Promethazine DM side effects |
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| Drug Class | |||||||||
| Generic Availability | |||||||||
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N/A |
N/A |
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| Pricing and Coupons * Prices are without insurance | |||||||||
View all Promethazine DM prices |
We could not find an exact match for this medicine. Try searching the Price Guide directly. |
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| Dosage Forms | |||||||||
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| Brand Names | |||||||||
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N/A |
Other dextromethorphan / doxylamine brands include: Nighttime Cough, Robitussin Nighttime Cough DM Maximum Strength, Safetussin PM, Vicks Nyquil Cough | ||||||||
| 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 |
N/A |
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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
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| Drug Interactions | |||||||||
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A total of 752 drugs are known to interact with Promethazine DM:
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A total of 428 drugs are known to interact with Robitussin Nighttime Cough DM:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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| Disease Interactions | |||||||||
| First Approval Date | |||||||||
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February 14, 2006 |
N/A |
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| WADA Class View classifications | |||||||||
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N/A |
N/A |
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| More Information | |||||||||
| Patient Resources | |||||||||
| Professional Resources | |||||||||
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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.
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.