Comparing Avonex vs Plegridy
| Avonex (interferon beta-1a) | Plegridy (peginterferon beta-1a) |
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| Avonex (interferon beta-1a) | Plegridy (peginterferon beta-1a) |
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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
Plegridy (peginterferon beta-1a) may be used to treat multiple sclerosis (MS) in adults and can be self-administered either subcutaneously or intramuscularly. Injection-site reactions with SC... View more |
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| More about Avonex (interferon beta-1a) | More about Plegridy (peginterferon beta-1a) | ||||||||
| Ratings & Reviews | |||||||||
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Avonex has an average rating of 7.3 out of 10 from a total of 46 ratings on Drugs.com. 70% of reviewers reported a positive effect, while 22% reported a negative effect. |
Plegridy has an average rating of 4.8 out of 10 from a total of 14 ratings on Drugs.com. 29% of reviewers reported a positive effect, while 43% 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 Avonex side effects |
View all Plegridy 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 | |||||||||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
View all Plegridy prices |
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| Dosage Forms | |||||||||
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| Brand Names | |||||||||
| Other interferon beta-1a brands include: Avonex Pen, Avonex Prefilled Syringe, Rebif, Rebif Rebidose |
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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3 hours |
78 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 342 drugs are known to interact with Avonex:
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A total of 338 drugs are known to interact with Plegridy:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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| Disease Interactions | |||||||||
| First Approval Date | |||||||||
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May 17, 1996 |
August 15, 2014 |
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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.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.