S-4 (commonly known as Andarine) attaches to the androgen receptor (AR) and sticks to it. Each time the AR interacts with testosterone, S-4 forces it to produce genes that exclusively benefit muscle and bone growth, generation selective anabolic activity. Due to this fastening and stimulation, more protein is produced which allows muscle building. S-4 also increases the amount of muscle mass produced by desensitizing the AR to the individual’s natural testosterone to influence a stronger effect. In other words, S4 can trigger muscle development with minus the same unwanted side effects.

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S4 (25 mg 60 capsules) (15% off)

  • Brands Reals Arms
  • Product Code: c
  • Availability: In Stock
  • $USD70.00

  • Ex Tax: $USD70.00