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Appearance:White or Off-white powder
Storage:Store at 8℃-20℃, protect from moisture and light.
Chemical Properties of Letrozole:
|Test Of Analysis||Standard Of Analysis||Results Of Analysis|
|Related substance A||≤0.3%||0.02%|
|All other impurity||≤0.3%||0.11%|
|Organic volatile impurities||Conforms with ICH requirements|
|Residue On Ignition||≤0.1%||0.04%|
|Water by KF||≤0.3%||0.1%|
Letrozole lowers estrogen levels in postmenopausal women,so it is used to treat certain types of breast cancer (such as hormone-receptor-positive breast cancer) in women after menopause. Letrozole is also used to help prevent the cancer from returning. Some breast cancers are made to grow faster by a natural hormone called estrogen. Letrozole decreases the amount of estrogen the body makes and helps to slow or reverse the growth of these breast cancers.This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.Letrozle’s dosage 2.5mg per day.