YK-11 vs testosterone

YK-11 (F-tier) vs testosterone (S-tier). mechanism, trials, evidence boundaries, dosing literature. side-by-side reference.

YK-11 · tier F

YK-11 is a steroidal androgen-receptor research chemical, not a peptide. It is commonly marketed as an oral capsule for muscle and strength, but its human record covers metabolite detection and one doping-control sample, not efficacy or safety.

People seek YK-11 for muscle and strength. Mouse-cell studies measured partial androgen-receptor activity and increased follistatin expression, but they did not show direct myostatin blockade or human muscle gain. Human records are limited to urinary metabolites after administration and one doping-control sample.

0 controlled human efficacy trials · half-life unknown; no measured parent terminal half-life in humans or animals · androgens

testosterone · tier S

the male sex hormone. the approved products replace it in men whose own production has failed, and above that range the same molecule adds muscle and strength with no training at all. schedule iii controlled substance in the us. educational record only, not medical advice.

the male sex hormone. the approved products replace it in men whose own production has failed, and above that range the same molecule adds muscle and strength with no training at all. it is the most-studied compound on the board. of the seven ester half-lives everyone quotes, two trace back to a measurement in humans.

5,246 TRAVERSE · HR 0.96 · half-life ~8 days (cypionate IM, per label); 33.9 d (undecanoate in castor oil, n=14); 10-100 min (unesterified) · libido

at a glance

• YK-11: tier F · 0 controlled human efficacy trials
• testosterone: tier S · 5,246 TRAVERSE · HR 0.96

reptides grades the research record and cites the literature behind every call. research reference only; not medical advice.