Why is Sports Technology Labs the best place to buy YK-11 powder online?

It’s not hard to find YK-11 for sale online. Still, Sports Technology Labs is the best place to buy YK-11 powder online because of their consistent, verifiable, high-quality, fast shipping, and their outstanding customer service.

At Sports Technology Labs, you can find the highest quality YK-11 powder for sale anywhere on the internet. We are a U.S.-based business, and our products are tested in U.S.-based third-party laboratories that certify a minimum 98% purity.

That’s why we’re confident in our claim that we offer the best YK-11 powder for sale on the market today.

YK-11

Each batch is bottled and tested in the USA to ensure accuracy and purity. Our Certificates of Analysis confirm that products meet the listed specifications:

• Date: 09/03/25
• Purity Level: 98.76%

YK-11 Mechanism of Action

The way YK-11 promotes muscle growth and key myogenic regulatory factors in skeletal muscle tissue is of particular interest. Factors such as myogenic differentiation factor (MyoD) and myogenic factor 5 (Myf5) are activated to a much greater extent than by DHT. This helps explain why YK-11 exerts its selective modulation of the AR.

Unlike testosterone and most other agents mediated by androgen receptors that promote anabolic growth, YK-11 can be taken orally, meaning injections are not necessary for proper absorption. It’s important to note that YK-11 is currently intended for laboratory research use only, and its side effects are not yet fully understood.

Follistatin Effects on Muscles

What differentiates YK-11 from other SARMs is a key aspect of its anabolic activity that is modulated via the expression of follistatin. This was uncovered by measuring the difference in effects when co-administering anti-follistatin antibodies with YK-11.

Follistatin has been demonstrated to boost insulin-stimulated glucose and amino acid uptake into skeletal muscle cells, which in turn enhances insulin sensitivity and increases skeletal muscle mass. Follistatin proteins also serve the crucial function of blocking inhibitory ligands from binding to Transforming Growth Factor-ß.

Perhaps one of the most exciting aspects of follistatin’s action is its binding and neutralization of catabolic proteins like Activin A, Activin B, and Myostatin. A significant challenge is that follistatin proteins themselves are quickly broken down through proteolysis and have limited bioavailability and half-life, even with direct injection into wasting muscles.

YK-11, however, stimulates the body to produce more follistatin proteins both systemically and locally. This may circumvent the limitations of direct follistatin administration and contribute to muscle growth.