Product Review · Updated November 2026
Chemyo YK-11 ReviewMyostine 10mg/ml Liquid Rated and Reviewed
In this Chemyo YK-11 review, we rate the Myostine 10mg/ml 50ml liquid on labelling, batch testing, price and value. You also get the research background, the risks and our verdict.
Our Editorial Score
Rated on public quality signals, not personal use.
Chemyo YK-11 at a Glance
Chemyo YK-11 is one of the more unusual compounds in the Chemyo range. It contains YK-11, sometimes sold as Myostine, dissolved in a liquid carrier for laboratory research.
Each bottle holds 50ml at a stated concentration of 10mg per ml. In other words, one bottle contains 500mg of compound in total. Like every Chemyo product, it carries a batch number and research-only wording.
So how does it compare? Overall, our Chemyo YK-11 review found strong quality signals. However, it sits at the top of the price range, and the research behind the compound is very limited.
Product Specs
| Compound | YK-11 |
|---|---|
| Sold as | Myostine |
| Class | Steroidal SARM |
| Format | Liquid solution |
| Concentration | 10mg/ml |
| Volume | 50ml |
| Total per bottle | 500mg |
| Price | $79.99 |
What Is YK-11? The Research Background
YK-11 is usually called a SARM. However, unlike most SARMs, it has a steroid structure, based on the hormone DHT. For that reason, researchers describe it as a steroidal SARM and a partial androgen receptor agonist.
Most research on YK-11 comes from cell studies. In muscle cells, researchers found that it raised levels of follistatin, a protein that blocks myostatin. That finding is why people link it to muscle growth.
Even so, YK-11 has never been tested in a human clinical trial. As a result, its effects and risks in people are largely unknown.
Our Chemyo YK-11 Review in Detail
Clear and Consistent Label
The label states the compound, the concentration and the volume. It also carries a batch number and research-only wording. Just as important, it makes no health or performance claims.
Batch Number and Lab Report
Each bottle links to a batch and to a third-party Certificate of Analysis. A good report confirms identity, purity and concentration. Therefore, always match the batch on your bottle to the report.
Priced at the Top of the Range
At $79.99, Chemyo YK-11 shares the highest liquid price with LGD-4033 and Andarine S4. It holds 500mg per bottle, the same as the cheaper RAD-140 and Cardarine. So you pay a premium for this compound.
Sold Through Authorised Resellers
After chemyo.com closed, ChemyoLabs became the main source for the liquid range. YK-11 is a less common compound, so it is worth checking stock before you plan research around it.
Liquid and Two Value Packs
YK-11 comes as a 50ml liquid. In addition, ChemyoLabs offers two value packs that pair it with MK-677 or GW501516. Both packs cost $119.99. However, there is no powder option.
Chemyo YK-11 Pros and Cons
Pros
- Clear label with batch number
- Third-party lab testing
- 500mg per 50ml bottle
- Two value pack options
- Sold by an authorised reseller
Cons
- Very limited research, no human trials
- Among the most expensive Chemyo liquids
- No powder option
- Not approved for human use
- Banned in all tested sport
YK-11 Risks: What the Research Says
Good quality control tells you what is in a bottle. It does not make the compound safe for people. For YK-11, the biggest concern is how little anyone knows.
How to Verify Genuine Chemyo YK-11
Copycat sites use the Chemyo name, so check every bottle before you trust it.
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Buy from an authorised reseller
Use ChemyoLabs or another seller with a direct link to the producer.
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Find the batch number
It should be printed clearly on the bottle and the label.
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Match it to the lab report
The Certificate of Analysis must show the same batch number.
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Check the seal and label
Look for a sealed cap, sharp printing and research-only wording.
Chemyo YK-11 Review: Our Verdict
Chemyo YK-11 earns 4.3 out of 5. It has a clear label, batch traceability and third-party testing, plus two value pack options.
However, it is expensive, and the compound has almost no human research behind it. Buy only from an authorised reseller, and match every batch number to its lab report.
Related Chemyo Reviews
Chemyo YK-11 FAQ
What is Chemyo YK-11?
Chemyo YK-11 is a research liquid containing YK-11, sometimes sold as Myostine, at 10mg/ml in a 50ml bottle. It is sold for laboratory research only.
Is YK-11 a SARM or a steroid?
YK-11 is usually called a SARM, but it has a steroid structure based on DHT. Researchers describe it as a steroidal SARM.
How much YK-11 is in one bottle?
Each 50ml bottle at 10mg/ml contains 500mg of YK-11 in total.
How much does Chemyo YK-11 cost?
At the time of writing, Chemyo YK-11 costs $79.99 for 50ml at ChemyoLabs. Prices can change, so check the shop.
Where can I buy Chemyo YK-11?
We recommend ChemyoLabs, an authorised Chemyo reseller. Always match the batch number to its lab report.
Has YK-11 been tested in humans?
No. Research on YK-11 comes mainly from cell studies. It has never been tested in a human clinical trial.
Is YK-11 banned in sport?
Yes. WADA prohibits YK-11 at all times, in and out of competition.
Compare every option in our Chemyo review, or see where to buy Chemyo.
Buy Genuine Chemyo YK-11 From an Authorised Reseller
Get the Chemyo YK-11 50ml liquid with a batch number and a third-party lab report.
Disclaimer: Chemyo.info is an independent information site. It is not the manufacturer or a seller. Our scores are editorial opinions based on public quality signals, not product testing on people. This page is general information only, not medical, legal or purchasing advice. YK-11 is not approved by any medicines regulator and has never been tested in a human clinical trial. Chemyo products are for laboratory research only and are not approved for human use. Sport bans them, and they may be restricted or illegal in your country. Always speak to a qualified doctor and check your local laws.