Comparing Ampyra vs Tysabri
| Ampyra (dalfampridine) | Tysabri (natalizumab) |
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| Ampyra (dalfampridine) | Tysabri (natalizumab) |
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Prescription only
Prescribed for Multiple Sclerosis. Ampyra may also be used for purposes not listed in this medication guide. |
Prescription only
Tysabri may be used to treat adults with multiple sclerosis or Crohn's disease and is given once every four weeks through an infusion center registered with the Touch Prescribing Program. A headache... View more |
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| More about Ampyra (dalfampridine) | More about Tysabri (natalizumab) | ||||||||
| Ratings & Reviews | |||||||||
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Ampyra has an average rating of 8.0 out of 10 from a total of 77 ratings on Drugs.com. 73% of reviewers reported a positive effect, while 13% reported a negative effect. |
Tysabri has an average rating of 7.7 out of 10 from a total of 98 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 15% 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 Ampyra side effects |
View all Tysabri 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 Tysabri prices |
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| Dosage Forms | |||||||||
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N/A |
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| Brand Names | |||||||||
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N/A |
Other natalizumab brands include: Tyruko | ||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||
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6.5 hours |
360 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 53 drugs are known to interact with Ampyra:
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A total of 423 drugs are known to interact with Tysabri:
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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. |
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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January 22, 2010 |
November 23, 2004 |
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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 | |||||||||
| 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.
See also:
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.