YK-11
People mainly take YK-11 for performance, weight loss, hormones. Based on 116 first-hand reports and 0 meta-analyses & systematic reviews in the medical literature. Ranked #662 of 2,750 overall.
Of reports that state an outcome, 41% are positive.
What YK-11 does, according to users
Of the people who reported each effect, the share who said it got better.
8 more with fewer than 3 reports
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
No randomized controlled trials in humans found on PubMed. The grade measures how much human research exists — read the conclusions below for what it found.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“add in 2 week of Yk11 to drop myostatin”
“Really only done cjc1295 and mk677 and a cycle of yk11... Looks like he shaved off a few pounds”
“(Myostatin) YK-11”
“this go I'm going for ostrine@20, s4@75, rad@20 lgd@10 and yk-11@15 and cardarine@20.”
“I started taking yk-11 and cardarine and within the first week my gf and friends started telling me I smell like rotten milk.”
Top discussions (5)
- So far so good. ↗
- Stacking up on Yk-11, MK-677, Rad-140, and S-23. Any thoughts or concerns I should be worried about? Including TRT, and Microdosing IGF 100mcmg’s a day. ↗
- 6 Week YK-11 Transformation. Body weights up 15 pounds and major compound lifts up 65-80 pounds. Cycle actually ends Saturday but ill be on Vacation so I figured id go ahead and post a final update before bloods and pct. Ask me Anything. ↗
- SARMS GUIDE FOR DUMMIES AND MORONS (110 things to know) ↗
- Tomorrows the Halfway mark of my 6 week solo YK-11 run. Here's my progress. Up 9 pounds. ↗
Other options for performance
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 3, 2026. How we rate