S4 Andarine is one of SARMS in the market. Like all SARMs, Andarine is a selective androgen receptor modulator. It’s full name is S-40503, and it quickly became known as S-4, while stronger versions have been dubbed Andarine. Andarine was developed by the Japanese pharmaceutical company, Kaken Pharmaceuticals, and it was aimed at treating osteoporosis.
Andarine is able to competitively block binding of dihydrotesarms s-4 andarine cas 401900-40-1stosterone to its receptor targets in the prostate gland, but its partial agonist effects at androgen receptors prevent the side effects associated with the anti-androgenic drugs traditionally used for treatment of BPH.