Comparing Letrozole vs Tykerb
| Letrozole Remove Letrozole from your drug comparison | Tykerb Remove Tykerb from your drug comparison |
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| Letrozole Remove Letrozole from your drug comparison | Tykerb lapatinib Remove Tykerb from your drug comparison | ||||||||||||||||
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Prescribed for Breast Cancer - Metastatic, Breast Cancer - Adjuvant, Breast Cancer. May also be prescribed off label for Female Infertility. |
Prescribed for Breast Cancer - Metastatic, Breast Cancer. Tykerb may also be used for purposes not listed in this medication guide. |
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Prescription only |
Prescription only |
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Ratings & ReviewsRecent helpful reviews |
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6.2
For Breast Cancer: Started taking letrozole in June. Side effects started almost immediately. Fatique, not flashes, joint and muscle aches. Hair thinning. Have cut my hair very short to hopefully make the thinning less noticeable. I just realized that I cut my hair 5-6 weeks ago and it does not seem to be growing at all. Has anyone else noticed this side effect. I would recommend yoga and acupuncture to help with the side effects. Without them, I would not be able to tolerate this medicine! Good luck to you all who are taking this drug! |
10.0
For Breast Cancer, Metastatic: Tykerb along with Xeloda have stabilized my tumors. I have been on these medicines for a year. |
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Drug Class |
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Side Effects |
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Commonly reported side effects include: bone fracture, arthralgia, edema, dizziness, fatigue, hypercholesterolemia, osteoporosis, and flushing. See the full letrozole side effects document. |
See the full Tykerb side effects document. |
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Pricing and Coupons* Prices are without insurance |
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View all letrozole prices |
View all Tykerb prices and generic prices |
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Generic Availability |
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Yes (this medicine) |
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Dosage Form(s) Available |
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Brand Names |
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| Femara |
N/A |
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Half LifeThe half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. |
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48 hours |
24 hours |
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CSA Schedule**View glossary of 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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FDA Alerts |
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N/A |
N/A |
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Drug Interactions |
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A total of 86 drugs are known to interact with letrozole:
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A total of 545 drugs are known to interact with Tykerb:
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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 |
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First Approval Date |
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July 25, 1997 |
March 13, 2007 |
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WADA ClassView World Anti-Doping Agency classifications. |
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N/A |
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More Information |
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Consumer Resources |
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Professional Resources |
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Related Treatment Guide |
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** 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.
For Breast Cancer: I’ve had cancer twice. This second time, I have Stage 3 breast cancer and had to have chemotherapy. I’m on Letrozole, and have been on it since September 2019. Firstly, I can’t believe the pain I’m in. It’s got worse by the week/month. I’m a Pilates teacher and work every day, but I’m finding that there are things I can’t do now, as my hands and elbows are unbelievably painful. I can take a lot of pain, but this is bad. When I get out of bed or up from sitting, I can barely walk away. I also have groin pain and lower back pain, yet I’m fit and strong in every other way. This is getting me down, as I feel I’m on a slippery slope. It doesn’t help that I am high risk for another cancer, and that every pain worries me. I’m sorry that there are so many who are experiencing this.