Comparing Avonex vs Tysabri
Avonex | Tysabri |
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Avonex (interferon beta-1a) | Tysabri (natalizumab) |
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Prescription only
Avonex is a type of interferon beta-1a that may be used to treat adults with multiple sclerosis (MS). It is administered intramuscularly once weekly into the upper thigh. Headache, flu-like... View more |
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 Avonex (interferon beta-1a) | More about Tysabri (natalizumab) | ||||||||
Ratings & Reviews | |||||||||
Avonex has an average rating of 7.2 out of 10 from a total of 44 ratings on Drugs.com. 67% of reviewers reported a positive effect, while 23% reported a negative effect. |
Tysabri has an average rating of 7.8 out of 10 from a total of 97 ratings on Drugs.com. 67% of reviewers reported a positive effect, while 15% reported a negative effect. |
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Drug Class | |||||||||
Side Effects | |||||||||
See also: Avonex side effects in more detail. |
See also: Tysabri side effects in more detail. |
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Generic Availability | |||||||||
N/A |
N/A |
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Pricing and Coupons * Prices are without insurance | |||||||||
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 Form(s) Available | |||||||||
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Brand Names | |||||||||
Other interferon beta-1a brands include: Avonex Pen, Avonex Prefilled Syringe, Rebif, Rebif Rebidose | Other natalizumab brands include: Tyruko | ||||||||
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. | |||||||||
3 hours |
360 hours |
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CSA Schedule ** View glossary of terms | |||||||||
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 | |||||||||
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 | |||||||||
A total of 326 drugs are known to interact with Avonex:
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A total of 405 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. |
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Disease Interactions | |||||||||
First Approval Date | |||||||||
May 17, 1996 |
November 23, 2004 |
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WADA Class View World Anti-Doping Agency classifications. | |||||||||
N/A |
N/A |
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More Information | |||||||||
Patient resources | |||||||||
Professional Resources | |||||||||
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.