Formestane (Lentaron) Powder Steroidal Selective Aromatase Inhibitor

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Laboratory Tested Formestane (Lentaron) Powder Steroidal Selective Aromatase Inhibitor With Discreet Shipping Fast Delivery


About Formestane

Formestane was the first selective, type I, steroidal aromatase inhibitor used in the treatment of estrogen-receptor positive breast cancer in post-menopausal women. Formestane suppresses estrogen production from anabolic steroids or prohormones. It also acts as a prohormone to 4-hydroxytestosterone, an active steroid which displays weak androgenic activity in addition to acting as a mild aromatase inhibitor. It is listed as a prohibited substance by the World Anti-Doping Agency for use in athletes.


Formestane Powder Specfication

Nom du produit Formestane
Apparence poudre cristalline blanche
Essai(*) 98~101.0% 99.2%
Identification By UV, To match with working standard conforme
Substances apparentées Not more than the reference solution (0.05%) conforme
Métaux lourds ≤20ppm 10ppm
Perte sur le séchage <0.5% 0.1%
Resiue on ignition ≤0.1% 0.05%
Melting 199-202° C 200° C


Formestane Dosage

Formestane has a very long active life on the order of 24-36 hours.This amount will usually last you about 3-4 weeks at a sufficient dosage of 200-400mg per day.I have found 200mg a day to be perfect for on cycle anti-estrogen usage and for post-cycle recovery of natural testosterone.Formestane has zero negative feedback (even though it is an androgen by definition) and serves to elevate natural testosterone as well as any anti-estrogen/anti-aromatase drug out there, next to clomid.

Formestane attacks the aromatase enzyme and is therefore a first line inhibitor.So if you need immediate relief of estrogen during your cycle, you need a second class drug (estrogen receptor blocker) such as nolvadex or clomid.Formestane is a lot like arimidex in its mechanism of action in attacking the aromatase enzyme itself.

Formestane decreases SHBG by 34% thus increasing androgen activity, which basically makes androgens/steroids in your systems MORE effective WITHOUT any increase in dosage.

Formestane increases IGF-1 levels by a whopping 26%.Doing so creates the perfect anabolic muscle building environment on cycle, off cycle and during pct.


Formestane Dosage

Formestane has poor oral bioavailability, and thus must be administered forthnightly (bi-weekly) by intramuscular injection. Some clinical data has suggested that the clinically recommended dose of 250mg was too low. With the discovery of newer, non-steroidal and steroidal, aromatase inhibitors which were orally active and less expensive than formestane, formestane lost popularity.

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