Breast cancer taking letrozole drug resistance can be prescribed to change other endocrine therapy drugs, such as abecycline, perphenazine and so on.
Letrozole is an aromatase inhibitor antitumor drug, can effectively promote the decline of estrogen level, often used in the treatment of postmenopausal advanced breast cancer, but some patients in the long-term use of the drug, there is a possibility of drug resistance, the therapeutic effect is not good, and may even lead to aggravation of the condition, at this time can be replaced with other therapeutic endocrine drugs.
At present, the more commonly used ones in the clinic are abecyclidine, pipercili and so on.
In addition, it is forbidden for those who are allergic to Letrozole drug components, pregnant and lactating women. Nausea, vomiting, weight gain, headache may occur after using the drug. Dizziness, etc. If the adverse reactions are obvious, you need to stop the drug and consult a doctor.
Breast cancer must actively cooperate with the doctor to take treatment, especially the use of drugs need to be guided by the doctor, do not arbitrarily stop, reduce or change drugs.