Andarine S4 100pills/bottle Raw Sarms Powder GTx-007 10mg Tablets for Male Female Burning Fat CAS 401900-40-1

Andarine, also known as S-4, S-40503, or 8, is a SARM developed with the aim of treating osteoporosis and muscle wasting.

SARMs (selective androgen receptor modulators) are drugs that bind to the androgen receptor (AR), which is the main site of action of the hormone testosterone.

In the early days, Andarine was described as the ideal SARM due to high oral bioavailability and great muscle- and bone-building effects (studied in animals) 

Phase I human trials with this drug have reportedly been successful but no studies have been published. However, further development of the drug was abandoned in favor of Ostarine, another SARM with a similar structure, also known as S-22.

We can presume that this was either because Ostarine was more effective, or because Andarine caused vision-related side effects (see below).

Andarine, commonly known as S4, is a Selective Androgen Receptor Modulator (SARM) developed by GTx. Like all SARM’s S4 was developed in the treatment of muscle wasting diseases with benign prostatic hypertrophy treatment also being high on the list of possible treatment benefits. Andarine is not as strong as some of the other SARM’s in terms of an anabolic effect that leads to the promotion of lean muscle tissue increases, but it does appear to have other benefits that can prove to be highly valuable. Being an effective SARM, like most SARM’s it is relatively side effect friendly with most users making it an increasingly common option for performance enhancing athletes.
Andarine (S4) Function and Traits
Anadarine (S4) is a SARM, specifically a medication that binds firmly to the androgen receptors. Unlike an anabolic androgenic steroid, S4 focuses only on the bone and muscle sites unlike other androgenic compounds that may affect secondary sex organs. By binding to the androgen receptors, S4 alters the gene expression, thereby increasing anabolism via increases in protein synthesis. Although a highly effective compound, in comparison to its binding affinity it is approximately one third that of testosterone.