Will YK-11 be the next compound to gain significant attention in muscle growth and body composition research?
With the continuous development of sports nutrition and performance science, it has become a research hotspot due to its dual role in androgen receptor regulation and myostatin-related pathways. Researchers are increasingly interested in how such compounds affect muscle development, fat metabolism, and overall body composition, making this a growing topic in muscle science, metabolic health, and performance research. If you are also interested in YK-11, please feel free to contact Xi'an Sonwu; we will be happy to assist you.
What Is the Function of YK 11
YK-11 Capsule is a synthetic compound, commonly classified as a selective androgen receptor modulator (SARM), but strictly speaking, it functions more like a myostatin inhibitor. Its primary functions are related to muscle growth and the regulation of muscle cells.
Main Functions of YK-11
1. Inhibition of Myostatin
Its most significant function is the inhibition of myostatin.
Myostatin is a protein that limits muscle growth. When myostatin is inhibited, the body can build more muscle than normal.
Simultaneously, the product may increase follistatin-like hormone (FMO) levels, a protein that promotes muscle growth by blocking myostatin.
In short: Myostatin = Inhibits muscle growth, FMO = Promotes muscle growth, YK-11 = Inhibits myostatin + Promotes FMO → Enhances muscle growth potential
2. Androgen Receptor Activation
It also binds to androgen receptors, similar to testosterone, which may: increase muscle mass, enhance strength, improve bone density, and promote protein synthesis. However, its androgenic activity is selective; it is classified as a selective androgen receptor modulator (SARM).
3. Muscle Cell Differentiation
Some studies suggest it may help muscle cells mature more quickly, contributing to muscle hypertrophy.
What are the effects of YK-11
YK-11 is primarily used to promote muscle growth and reshape body fat, with most results derived from laboratory studies and user reports.
1. Muscle Growth (Main Effect)
A laboratory study showed that the drug can increase folliculoritol levels and stimulate muscle cell differentiation, both of which are closely related to muscle growth. Folliculoritol can inhibit myostatin (a protein that limits muscle growth), thereby increasing the potential for rapid muscle growth.
User-reported muscle growth effects: 1. Lean muscle growth: Approximately 3-5 kg (6-10 lbs) gain in about 8 weeks; muscles appear firmer and fuller; "dry" growth (less water retention than some steroids). These are user-reported but common.
2. Strength growth: Many users report strength gains, such as increased bench press and squat weights, and increased lifting weights over time. This is likely due to androgen receptor activation and increased muscle fiber development.
3. Body composition reshaping (muscle increase, fat reduction): It's not a direct fat-burning product, but users frequently report increased muscle mass, decreased body fat percentage, and a more defined physique (abs, arms, shoulders). This is because increased muscle mass boosts metabolism, thus improving body composition.
4. Recovery and endurance: Some users report faster post-workout recovery, reduced muscle soreness, and the ability to train more frequently. This may indirectly contribute to muscle growth by increasing training frequency.
5. A 2024 animal study found that this compound enters the brain and affects the hippocampus.
Does YK-11 help with fat loss
YK-11 is not a direct fat-burning compound, but it may indirectly help with fat loss by promoting muscle growth and metabolism. Increased muscle mass can increase the basal metabolic rate, meaning the body burns more calories at rest. Therefore, people with higher muscle mass may find it easier to reduce body fat over time, especially when combined with a proper diet and exercise.
Furthermore, some researchers believe that androgen receptor modulators may affect nutrient allocation-the process by which the body directs nutrients to muscle tissue rather than to fat storage. It is also known for its potential to inhibit myostatin, which could promote muscle development and, theoretically, reduce fat accumulation.
It's important to understand that fat loss still primarily depends on fundamental factors such as calorie balance, diet, physical activity, sleep, and hormonal health. Therefore, it is more of a compound that may help increase muscle mass and improve overall body composition, rather than a standalone fat-loss solution.
How Long Does YK-11 Remain in the Body
The duration of its stay in the body is currently estimated based on its half-life. It is generally believed that its half-life is approximately 6–10 hours, while drugs typically require about 5 half-lives to be largely eliminated from the body. Therefore, theoretically, YK-11 remains in the body for approximately 1–3 days, but this is only an estimate, and the actual time will vary depending on individual metabolism, dosage, and duration of use.
It is important to note that "completely metabolized in the body" and "detectable in a drug test" are two different things. Although the compound may be metabolized within a few days, in urine tests or professional anti-doping tests, the detection time can last for weeks or even longer. Anti-doping agencies such as the World Anti-Doping Agency have listed YK-11 as a prohibited substance; therefore, in sporting events or drug testing environments, its detectable time is usually much longer than its actual metabolic time in the body.
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References：https://pubmed.ncbi.nlm.nih.gov/38521455/?utm_source=chatgpt.com