Brawn Nutrition M-Sten 60 caps- Non-Steroidal Muscle Enhancers


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Brawn Nutrition M-STEN is an anabolic-androgenic supplement based on 2, 17a-dimethyl-17b-hydroxy-5a-androst-1-en-3-one, commonly known as Methylstenbolone, M-Sten, or Ultradol. This double-methylated compound is structurally similar to 5α-dihydrotestosterone (DHT) but is a non-steroidal prohormone, not an anabolic-androgenic steroid (AAS).

The primary mechanism of action of Methylstenbolone is its strong binding affinity for Sex Hormone Binding Globulin (SHBG). SHBG is responsible for binding sex hormones, including testosterone and estradiol, thus regulating their activity and transport in the body. It is believed that hormones bound by SHBG are not as active. Therefore, by occupying SHBG, Methylstenbolone reduces SHBG’s capacity to bind free hormones, increasing free testosterone availability and enhancing its anabolic effects.

Methylstenbolone does not aromatize or have an affinity for progesterone receptors. However, its interaction with SHBG can indirectly increase the levels of free hormones, including female hormones, potentially raising the risk of gynecomastia. It also amplifies the effects of DHT, potentially leading to concerns such as alopecia and prostate enlargement. Other known side effects include the possibility of retaining sodium and water in the body.

M-STEN by Brawn Nutrition is a highly effective and bioavailable agent that enhances the amount of free testosterone and stimulates anabolic pathways. This leads to significant improvements in strength, muscle size, and overall muscle mass development in a relatively short period. The product is designed to produce impressive results, but its use requires understanding one’s body and managing potential side effects. Therefore, it is intended solely for advanced users.


Take one capsule daily with plenty of water.

Remember, M-STEN is a non-steroidal prohormone and should not be confused with anabolic-androgenic steroids (AAS). Its use requires careful consideration and understanding of its effects on the body.


Brawn Nutrition M-STEN, while a potent anabolic-androgenic compound known as Methylstenbolone, is classified as a non-steroidal prohormone. It’s designed to enhance muscle mass, strength, and overall physical performance by increasing the availability of free testosterone through its interaction with SHBG (Sex Hormone Binding Globulin). Given its potency and the potential for side effects, a structured approach to dosing, cycle length, post-cycle therapy (PCT), and organ protection is critical, especially for advanced users familiar with prohormone or performance-enhancing supplement cycles.

M-STEN Cycle

  • Dosage: The recommended dosage for M-STEN is one capsule per day, taken with plenty of water to ensure proper absorption. Due to its potent nature and potential hepatic stress, it’s crucial not to exceed this dosage.
  • Cycle Length: A typical M-STEN cycle should last 4 to 6 weeks. Extending the cycle beyond 6 weeks is not recommended due to the increased risk of adverse effects without proportionate gains in muscle mass or strength.

Post-Cycle Therapy (PCT)

PCT is essential after completing an M-STEN cycle to help the body restore natural hormonal balances and support recovery from any stress the cycle may have imposed on the body’s endocrine system.

  • PCT Strategy: Immediately following the end of the M-STEN cycle, start a PCT protocol that lasts 4 weeks. The focus should be on natural testosterone support and estrogen management, even though M-STEN is not known to aromatize. Products containing natural ingredients like Fenugreek, Tribulus Terrestris, and Ashwagandha can be beneficial for stimulating natural testosterone production.
  • Estrogen Management: While M-STEN does not convert to estrogen, its interaction with SHBG can alter the balance of free hormones, potentially affecting estrogen levels indirectly. Including supplements that support hormonal balance can be prudent.

Organ Protection

Given M-STEN’s double-methylated nature, it is essential to include liver and organ support supplements throughout the cycle and during PCT.

  • Liver Support: Utilize supplements containing Milk Thistle, N-Acetyl Cysteine (NAC), and TUDCA (Tauroursodeoxycholic Acid) from the start of the cycle to several weeks post-cycle to aid liver function and overall organ health.

Additional Considerations

  • Hydration and Diet: Increase water intake throughout the cycle and maintain a nutrient-rich diet to support muscle growth and overall health.
  • Monitoring: Regularly monitor for any potential side effects, including signs of gynecomastia, water retention, or changes in mood and well-being. Adjustments to the cycle or support supplements may be necessary based on individual responses.
  • Professional Guidance: Given the potent nature of M-STEN, seeking guidance from a health professional experienced in dietary supplements and hormonal health is advisable before starting the cycle, especially for individuals with pre-existing health conditions.

By adhering to these guidelines, users can navigate an M-STEN cycle more safely, maximizing muscle gains while mitigating potential risks. Remember, understanding your body’s response and making informed decisions about dosage, cycle length, and support mechanisms is crucial for a successful and safe prohormone cycle.