How it works
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Strongly binds to androgen receptors in muscle, driving powerful anabolic signalling.
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Helps increase protein synthesis and nitrogen retention in lean tissue.
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Can influence strength, hardness and overall body‑composition during intense phases.
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High receptor activity also means more suppression, so recovery planning is critical.
Benefits
✓
Extremely strong lean‑mass support
Used when experienced lifters want clear changes in size, density and performance over a short period.
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Helps create a hard, dry physique
Often chosen for cutting or pre‑photo phases where muscle detail and tightness are the main goal.
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Big strength and performance push
Users commonly report heavier lifts, more reps and a more aggressive training output while on‑cycle.
✓
Pairs with serious cycle support
Designed to be run only alongside robust liver, lipid and general health support products and bloodwork.
✓
Used in advanced stacks only
Typically appears in the stacks of seasoned athletes who already know how they respond to milder SARMs.
Dosage and Safety
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S23 is a high‑potency experimental SARM, not an approved medicine or dietary supplement.
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Human long‑term safety data are limited.
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It can significantly suppress natural testosterone and may influence liver enzymes, blood lipids and cardiovascular markers.
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Any use should occur only under medical supervision, with regular bloodwork, full cycle support and structured PCT.
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Not for people with an existing health condition or comorbidities.
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Always consult a physician before considering experimental substances.
Ingredients
Component
Dose per Serving
%DV
S23
10 mg
*
Black Pepper Fruit Extract (Piper nigrum)
5 mg
*
Vegetable capsule (HPMC)
—
*
*Daily Value (DV) not established.
Used Together
FAQ
Is S23 suitable for beginners?
No, S23 is one of the harshest SARMs and is strongly suppressive to natural hormones. It belongs only in the hands of experienced users who already know how they respond to milder compounds, and who are prepared to run full support and proper post‑cycle therapy with medical oversight.
Does S23 require PCT after the cycle?
Yes, because S23 significantly suppresses natural testosterone, a structured post‑cycle therapy is strongly advised after use. Many advanced athletes combine PCT blends with bloodwork to track recovery. Skipping PCT can leave hormones low, training poor and overall health compromised for a long time.
Can I stack S23 with other SARMs?
Most users avoid stacking S23 with other SARMs because total androgen load becomes very high. If it appears in a protocol, it usually replaces lighter compounds, not sits on top of them. Stacking should only be considered with medical guidance and full health monitoring.
What side effects are associated with S23?
Reported issues include heavy suppression of natural testosterone, mood and libido changes, possible hair and skin effects, and strain on cardiovascular and liver markers. Because there are no long‑term human trials, unknown risks may exist. Anyone noticing worrying symptoms should stop use and consult a doctor immediately.
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