Andarine - S4

S4 is a very powerful SARM known for its effects on muscle mass and bone strength. Originally created by GTx as a potential treatment for muscle wasting disorders, it was ultimately discontinued due to adverse effects related to vision and eyesight. It has a bright yellow appearance in both powder and solution form.

You can learn all about S4 in the articles below.

Best For:

Basic Profile:

Side Effects

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