Mastorine (S23) - High Potency Lean Mass & Strength

Achieve your peak physique with Mastorine (S23), the most potent formula for those seeking extreme lean muscle mass and strength. Designed for serious athletes, this compound is ideal for body recomposition and achieving a harder, more vascular appearance. If you are looking for a powerful alternative to S4 without the visual side effects, S23 is the ultimate choice for your supplementation regimen.

Specifications

Description

Mastorine (S23) represents a significant advancement in chemical development. Originally derived from the modification of the C-6 compound, researchers replaced the para-nitro group with a cyano group to enhance its properties. This modification resulted in a massive increase in oral bioavailability, moving from 76% in C-6 to an impressive 96% in S23.

This compound is recognized in the bodybuilding community for its high efficiency in building muscle mass and strength. While it is one of the most suppressive SARMs on the market, its effectiveness in driving body recomposition is unmatched. Due to its high potency, it has also been studied for potential use as a male hormonal contraceptive in pre-clinical trials.

For those concerned with liver health, S23 is designed to be more liver-friendly than methylated compounds like YK11, as it contains fewer methylated groups. However, users should be aware of its high testosterone-suppressing potential and potential anecdotal side effects like irritability or sleep disturbances, similar to trenbolone.

Shipping & Delivery

Please note that military addresses (including APO and FPO) are currently not supported for this product.

FAQ

What is the recommended dosage for S23?
For beginners, a minimum working dosage of 10 mg is recommended. The average dosage used is 15-30 mg, with a maximum recommended limit of 50 mg. For women, a dosage of 5-10 mg is suggested.

What is the half-life of this product?
The half-life for S23 is approximately 12 hours.

Are there any known side effects?
S23 is highly suppressive to natural testosterone production. Additionally, anecdotal reports suggest it may cause irritability or poor sleep, similar to the effects seen with trenbolone.