YK-11

YK-11 is a synthetic steroidal selective androgen receptor modulator (SARM) that has gained significant attention in the research community for its unique dual-action profile. Unlike most SARMs, YK-11 not only binds to androgen receptors but also acts as a myostatin inhibitor, potentially enhancing muscle growth far beyond traditional SARMs.

Originally discovered by Japanese researcher Yuichiro Kanno in 2011, YK-11 is considered one of the most potent SARMs available for research, making it popular in studies related to muscle hypertrophy, strength increase, and bone density support.

What is YK-11?

YK-11 is a steroidal SARM structurally similar to DHT (Dihydrotestosterone). While it shares some traits with anabolic steroids, it is more selective, binding specifically to androgen receptors in muscle and bone tissue.

The standout feature of YK-11 is its ability to inhibit myostatin, a natural protein that limits muscle growth. By suppressing myostatin, YK-11 may dramatically enhance muscle size, strength, and recovery in research applications.

Key Features

• Compound Name: YK-11

• Category: Steroidal SARM & Myostatin Inhibitor

• Form: Oral (capsules or liquid solution)

• Half-Life: ~6–8 hours

• Legality: For research purposes only (not FDA-approved for human use)

Benefits of YK-11 in Research

• 💪 Extreme Muscle Growth: Potent anabolic effects through dual action.

• ⚡ Strength Enhancement: Increases muscular strength in a short time.

• 🦴 Bone Health: Promotes bone mineralization and density.

• 🔥 Fat Loss Support: Helps maintain lean muscle mass during calorie deficit.

• ⏱️ Faster Recovery: Reduces recovery time between training sessions.

• 🚫 Unique Myostatin Inhibition: Unlocks muscle growth potential beyond typical SARMs.

Potential Research Applications

• Studies on muscle wasting diseases

• Research into myostatin inhibition & hypertrophy

• Bone health and density trials

• Performance and recovery research

Possible Side Effects

While YK-11 shows promise, research suggests possible risks due to its potency:

• Testosterone suppression (more pronounced than mild SARMs)

• Potential liver strain (due to steroidal nature)

• Joint or tendon discomfort (reported in some trials)

• Limited long-term human data

⚠️ Strictly for laboratory research use only.

Recommended Dosage (For Research Purposes Only)

• Dosage Range: 5–15 mg daily

• Cycle Duration: 4–8 weeks

• Half-Life: ~6–8 hours (split dosing recommended)

• Stacking Options: Often stacked with RAD-140, LGD-4033, or MK-2866 for maximum muscle growth research.

Storage Guidelines

• Store in a cool, dry environment away from direct sunlight.

• Keep containers tightly sealed.

• For research and laboratory use only.

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Purity Guarantee

Each batch of YK-11 is tested for purity and consistency, ensuring reliable results in every study.