S-4
Also known as: Andarine, GTx-007
S-4 is a catalog-expanded sarm entry in ProtoComp's source-backed compound corpus. It is included for search, calculator math, stack awareness, and future research curation based on add sarm category and seed, expand compound catalog, local_seed, wiki_sarm, wikipedia_table. Published dosing, cycle length, and clinical-use claims are intentionally left null until compound-specific evidence is reviewed.
Early SARM investigated for BPH and muscle wasting. Known for dose-dependent yellow vision tint caused by accumulation in retinal tissue.
Split dosing typical due to short half-life. Vision effects reverse after discontinuation.
Off-cycle: 8 weeks
Half-life ~4 hours — requires multiple daily doses.
Contraindications
- • Pre-existing vision problems
- • Liver disease
- • Pregnancy
Common side effects
- • Yellow/green vision tint (dose-dependent)
- • Night vision difficulty
- • HPG suppression
- • Fatigue
Serious risks
- • Vision side effects — usually reversible but unpleasant
- • HPG suppression
- • Hepatotoxicity potential
Requires monitoring
- • Testosterone
- • Liver function
Pregnancy / breastfeeding
Contraindicated
- Vision side effects are real and dose-dependent — not a "myth"
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