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S23 belongs to a new class of drugs called selective androgen receptor modulators (SARM). SARMs mimic testosterone by binding to hormone receptors in specific parts of the body.

Similar to testosterone and other SARMs, S23 targets the muscle and bone tissues to promote muscle growth and bone health. Unlike testosterone, S23 does not target the prostate tissue so it does not cause prostate enlargement. On the contrary, studies show that S23 reduces the size of the prostate


While it is legal to sell Sarms in the UK, US, Canada, Australia, etc, the US Food and Drug Administration has publicly warned that they increase the risk of “life-threatening reactions”.

Specification:S23 ≥99%

White powder ,Solubility:Propylene Glycol, DMSO, Ethanol

S23 Effects

  • Increases lean muscle mass
  • Decreases fat mass
  • A potential male birth control
  • May increase bone strength
  • May increase female sexual motivation
  • Fewer side effects compared to steroids

Side Effects

  • Unknown long-term risks
  • Testosterone depletion
  • Testicle shrinkage
  • No human studies

Dosage and Stack


Limited dosing information is available from animal studies (S23 doses widely ranged from 0.01 mg/day to 3 mg/day for rats through injections or by mouth. Users have reported using S23 for up to 8 weeks, usually as part of cutting cycles.

Dosage form application

  • Pure powder form without excipients for research use.
  • Diluted liquid.

Why buy sarms from nootropicsorigin?

Purity guarantee above 99%, provide HPLC report test, and COA along with the batch of goods.