YK-11 vs testosterone

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

YK-11 — tier F

a steroidal androgen-receptor research chemical with cell and animal findings, no controlled human trial, no measured half-life, and no established human safety margin.

the androgen-receptor signal is real in cells, but the human evidence file is empty and the safety file contains unresolved animal toxicity and case-level warning signals.

0 controlled human trials · half-life unknown; no measured concentration-time 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 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.