Comparing Allegra-D 24 Hour vs Singulair
| Allegra-D 24 Hour (fexofenadine / pseudoephedrine) | Singulair (montelukast) |
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| Allegra-D 24 Hour (fexofenadine / pseudoephedrine) | Singulair (montelukast) |
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Prescription and OTC
Prescribed for Allergic Rhinitis. Allegra-D 24 Hour may also be used for purposes not listed in this medication guide. |
Prescription only
Singulair is used in addition to other treatments for the maintenance treatment of asthma. It does not relieve acute attacks and may cause neuropsychiatric effects in a small number of people... View more |
Related suggestions Allergic Rhinitis
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| More about Allegra-D 24 Hour (fexofenadine / pseudoephedrine) | More about Singulair (montelukast) | ||||||||
| Ratings & Reviews | |||||||||
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Allegra-D 24 Hour has an average rating of 6.1 out of 10 from a total of 36 ratings on Drugs.com. 53% of reviewers reported a positive effect, while 33% reported a negative effect. |
Singulair has an average rating of 6.5 out of 10 from a total of 223 ratings on Drugs.com. 53% of reviewers reported a positive effect, while 30% 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. | |||||||||
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View all Allegra-D 24 Hour side effects |
View all Singulair 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 | |||||||||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
View all Singulair prices |
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| Dosage Forms | |||||||||
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N/A |
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| Brand Names | |||||||||
| Other fexofenadine / pseudoephedrine brands include: Allegra-D 12 Hour, Allegra-D 12 Hour Allergy & Congestion, Allegra-D 24 Hour Allergy & Congestion |
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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14.4 hours |
5.5 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 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 335 drugs are known to interact with Allegra-D 24 Hour:
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A total of 117 drugs are known to interact with Singulair:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider. |
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| Disease Interactions | |||||||||
| First Approval Date | |||||||||
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N/A |
February 20, 1998 |
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| WADA Class View classifications | |||||||||
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N/A |
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| More Information | |||||||||
| Patient Resources | |||||||||
| Professional Resources | |||||||||
| 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.