Letrozole is part of a new generation of highly selective aromatase inhibitors and is an artificially synthesized benzotriazole derivative. Letrozole inhibits aromatase to lower estrogen levels, thus preventing estrogen from stimulating tumor growth. Its in vivo activity is 150-250 times stronger than that of first generation aromatase inhibitor Amarante. As it is highly selective, it will not impact glucocorticoid, mineralocorticoid and thyroid functions; even at high dosages, it will not have any inhibiting effects on adrenal corticosteroid secretion, giving it a high treatment index. Letrozole has no latent toxicity towards any bodily systems and target organs, has no mutagenicity and carcinogenic effects, has minimal toxic side effects, is well-tolerated, and has stronger anticancer effects than other aromatase inhibitors and antiestrogen drugs. Letrozole is suitable for advanced breast cancer postmenopausal patients who have not responded to estrogen-suppressing treatment and for early breast cancer treatment. It is used to treat postmenopausal patients with advanced breast cancer and serves as a second-line treatment to follow unsuccessful antiestrogen treatment. Compared to the current standard Tamoxifen treatment, Letrozole can better prevent the risk of breast cancer 

Our service: 
Quality:  Our products match CP and USP standard before comes out from factory and rechecked by third institution like Jonashik and scores well always, we supply test report credit 30$ for next order

Shipping: available to worldwide, ETA 12 days around,customer just only need to supply us ship info and then wait the order delivery after payment, we will supply track number immediately when pack sent out
we experienced on shipping, we can promise free reshipping if seized by custom unfortunately

Payment: T/T,,Bitcoin
................................................................................
how to order
email or message us that includes your order like formate below:
product A   100g
product B   10vials

delivery country: 

our sales will quote a total cost includeds shipping fees and each item fees in 12 hours regularly. our service will satisfy your purchase and supply professional guide
 

Our advantage:

Rich experience.

We have specialized in this field for 7 years. Our steroids and hormones have been exported to overseas, like Europe, Africa, Asia, America and other countries. And we have got very good feedback from our customers, and established long friendly relations of cooperation.

High quality products with the best price

1.All powders are factory directly supplying and have much in stock.

2.Before each powder send out, it all will be tested again by our technician, if the quality good, then it can be sent out to customers.

Professtional packing and fast delivery

1.Professtional team for packing, different country and quantity order have different packing way, sure package the products the best to your order.

2.We have mass stock, so that we can guarantee all the package can be sent out as soon as possible after you pay and should arrive your hands 3-7 days safely by DHL,TNT,FEDEX,HKEMS,UPS,etc.

Best pre-sell and after-sell service.

1.Once the package send out, tracking number and packing picture should email you later

2.For raw powder buyer, we also can help you cook steroid powder into injection and supply you all the things to make ready use injection, such as 10ml vials,0.22um-0.45um whatman filter,crimper machine and filter pump.

How to order

1. Let me know the products with quantity you are interesting and your requirement, you will get the best offer.

2. After we confirm all the details about the order, Products will send out within 24 hours after we received your payment(MoneyGram,，T/T  and Bitcoin are accepted).

3. Tracking No. will send to you within 2-3days.Usually after 7-15days you will received your package.

4. We will take care of your order till parcel to your door, and expecting for your further feedback, 24 hours on line for after-sale service.