YK-11 vs Oxandrolone

YK-11 (F-tier) vs Oxandrolone (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

Oxandrolone · tier S

Anavar is oral oxandrolone, an anabolic-androgenic steroid used in bodybuilding for muscle, strength, and a leaner or harder look.

Human studies support anabolic and body-composition effects that could make an already lean physique look harder. They do not show literal water loss, a guaranteed bodybuilding result, or safety in healthy performance use.

+3.0 kg lean mass in one 12-week older-men RCT · half-life 10.4 hours in younger volunteers and 13.3 hours in older adults in the historical Oxandrin label · androgens

at a glance

• YK-11: tier F · 0 controlled human efficacy trials
• Oxandrolone: tier S · +3.0 kg lean mass in one 12-week older-men RCT

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