Letroxyl Kalpa Pharmaceuticals is a medication used by postmenopausal women to reduce estrogen level. This helps to reduce growth of certain types of tumors. This medication is commonly used to treat breast cancer.
Letroxyl is available as the trade name of Letrozole and requires a prescription for use. The medication is most effective when taken according to the doctor’s dosage instructions.
Letroxyl works by suppressing the excessive production of estrogen in the body. Breast cancer is usually exacerbated by the activity of estrogen. The medication works in such a way that it can slow down the growth of cancerous cells in the breast to a large extent by bringing down the estrogen level.
The main use of Letroxyl is to reduce the level of estrogen in women who are going through the post-menopausal phase. This in turn significantly reduces the risk of developing breast cancer. The medication may also be used to for treating conditions of infertility in women, along with other off-label uses.
Letroxyl Benefits for Bodybuilding
As an aromatase inhibitors, Letrozole basically binds to the aromatase enzyme to disrupt its ability to form estrogen hormones and keep them from being released in the body. This promotes a rise in testosterone to normalize their levels in the system, which is significantly reduced after cycling with anabolic steroids and prohormones.
Compared to other aromatase inhibitors, Letroxyl has been seen to be very potent in terms of keeping estrogen hormones in check. It’s so powerful that it has the ability to cut estrogen by as much as 98% in women and 65% in men when used in recommended doses.
Letrozole’s potency is mainly attributed to its effective inhibition of the protein enzyme called cytochrome P450 that triggers the conversion of aromatase enzymes into estrogen. It didn’t take long before it became one of the most popular AI’s for PCT use.
Letroxyl Bodybuilding Dosage
An effective dose of Letroxyl is 2.5 mg/day, but be forewarned, if you go over that amount, it can kill your sex drive. Also worth noting is that there´s a rebound effect on your estrogen when you come off Letrozole. Maximum inhibition of the aromatase enzyme has been found to happen at doses as low as 100mcg! (2)
How good is this compared with Aromasin and Arimidex, it´s too other main rivals? Well, In non-cellular systems, Letrozole (Letroxyl) is 2-5 times more potent than anastrozole and exemestane in its inhibition of the aromatase enzyme and activity, and in cellular systems it is 10-20x more potent! It also lasts quite a long time in your body, but takes awhile to get going Letrozole (Letroxyl) has a whopping 2-4 day (!) ½ life, and you need to take Letrozole (Letroxyl) for 60 days to get a steady blood plasma level (8).