What is S-4?
S-4, also known as Andarine, is a novel nonsteroidal selective androgen receptor modulator (SARM) that is being developed for the treatment of muscle wasting diseases and osteoporosis. It is also being investigated as a potential alternative to anabolic steroids for bodybuilding.
S-4 mechanism of action
S-4 works by selectively binding to androgen receptors in muscle and bone tissue, while not binding to androgen receptors in other tissues. This allows it to target androgen receptors in muscle and bone tissues, providing muscle building and bone strengthening benefits while avoiding androgenic side effects like prostate enlargement.
Studies involving S-4
Several studies have been conducted to evaluate the safety and efficacy of S-4. In one study, healthy male volunteers were given either a placebo or a single dose of S-4. Results showed that S-4 was well tolerated and had no significant adverse side effects. In another study, S-4 was found to increase muscle growth and strength in rats. In a third study, S-4 was found to increase muscle synthesis in men and women while having no adverse effects on reproductive hormones or lipid levels.
5 S-4 FAQs
1. Is S-4 safe?
Yes, S-4 is generally considered safe and well-tolerated when used as directed. In clinical trials, it has shown no significant side effects or adverse events.
2. Does S-4 cause hair loss?
No, S-4 does not cause hair loss. As a selective androgen receptor modulator, S-4 binds to androgen receptors in certain tissues and not others, so it does not affect hair follicles.
3. Can women use S-4?
Yes, S-4 can be used by both men and women. In clinical trials, it has been found to be safe and effective in both genders.
4. How long does S-4 stay in the system?
S-4 has a half-life of 24 hours, so it can stay in the system for up to 48 hours after administration.
5. What are the side effects of S-4?
The most common side effects of S-4 are mild and include headache, nausea, and fatigue. It is generally well-tolerated when used as directed.
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