50mg/Ml Injectable Semi Finished Steroids Oil Proviron /Mesterolone CAS 1424-00-6

Semi-finished steroids oil Proviron (Mesterolone) 50mg/ml injectable oil gain muscle yellow oil 1424-00-6

Proviron (Mesterolone) 50mg/ml injectable oil

Alias: Proviron
CAS No: 1424-00-6
Einecs No: 215-836-3
MF: C20H32O2
MW:304.47
Purity: 99%
Appearance: white crystalloid powder,soluble in acetone, ethanol, ethyl ether, ethyl acetate, insoluble in water.

Proviron (mesterolone) is an interesting anabolic steroid, though it is not of much value to bodybuilding. It seems that the most common reason for many to consider including it in a steroid stack is for anti-estrogenic activity. In the days before anti-aromatases and the use of SERMs (selective estrogen receptor modulators) such as Clomid and Nolvadex, there was some merit to this.

Bodybuilding

Proviron was popularized years ago as an anti-estrogen because it is has a high affinity to bind to the aromatase enzyme, so anabolic steroid (AS) users could use it to serve as their AI (aromatase inhibitor) replacement. Bodybuilders were using it during post cycle therapy (PCT); unfortunately, studies have shown proviron does suppress LH (luteinizing hormone) – in some cases. As a result, high proviron dosage can prevent the pituitary gland from recovering after a steroid cycle. Some users insist proviron does not suppress the HPTA when used in PCT or during a bridge; however, this is up for debate. As a side note, some studies support long term use of proviron at high dosages without serious suppression. The science supports proviron use for PCT but not in every case.

Now that we have aromasin, arimidex, and letrozole, proviron has become obsolete when it comes to anti-estrogen usage. We know that the true aromatase inhibitors (AI) are safe to use during post cycle therapy, and will not suppress your HPTA. Though, proviron shouldn't either.

In this respect, it doesn't mean proviron does not have its uses on cycle when using an aromatizing compound such as dianabol, testosterone, nandrolones, or equipoise. In fact, a user can expect to have a harder look, more vascularity, and less puffiness when stacking proviron with a wet compound.

Another benefit of proviron is that it binds very well to SHBG (sex hormone binding globulin), which is the hormone responsible for reducing free testosterone circulating in the body. This is probably the reason why some use proviron during PCT.

Those that compete will appreciate proviron's hardening properties. Since proviron is 5-alpha reduced and not capable of forming estrogen, it will help give a drier look.

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