Comparing Arimidex vs Femara
| Arimidex (anastrozole) | Femara (letrozole) |
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| Arimidex (anastrozole) | Femara (letrozole) |
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Prescription only
Arimidex is a medication that may be used to treat postmenopausal breast cancer and works by lowering estrogen levels in the body. It is usually taken for five years and hot flushes are the most... View more |
Prescription only
Femara is a treatment that may be used to reduce the risk of breast cancer recurrence in postmenopausal women and also to increase the chance of ovulation in women with polycystic ovary syndrome... View more |
Related suggestions Breast Cancer
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| More about Arimidex (anastrozole) | More about Femara (letrozole) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Arimidex has an average rating of 5.8 out of 10 from a total of 80 ratings on Drugs.com. 38% of reviewers reported a positive effect, while 29% reported a negative effect. |
Femara has an average rating of 6.7 out of 10 from a total of 67 ratings on Drugs.com. 54% of reviewers reported a positive effect, while 19% 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 Arimidex side effects |
View all Femara side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Arimidex prices |
View all Femara prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
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N/A |
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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50 hours |
48 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 D
Positive evidence of risk
See the full pregnancy warnings document. |
Category D
Positive evidence of risk
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 20 drugs are known to interact with Arimidex:
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A total of 120 drugs are known to interact with Femara:
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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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December 27, 1995 |
July 25, 1997 |
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| WADA Class View classifications | |||||||||||||||||
| More Information | |||||||||||||||||
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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.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.