Mastorine 10mg – S23

Prodotto appartenente alla famiglia dei SARMS

Spedizione (se il prodotto è in stock): 3 giorni lavorativi di processing e dai 5 ai 20 giorni lavorativi di spedizione
Spese di Processing e spedizione: 27€ in tutta Italia

Pagamenti disponibili: Bitcoin - Bonifico Bancario - Carta di credito . Neteller

Briefly about Mastorine (S23)
Mastorine, also known as S23 , is considered one of the most powerful SARMs available for building lean muscle mass and increasing strength . It provides an extremely hard, lean, and veiny appearance , making it highly sought after in advanced body recomposition phases.
Compared to other SARMs, Mastorine (S23) does, however, exhibit the highest level of testosterone suppression , making it suitable only for experienced and knowledgeable users.

What is Mastorine (S23)

S23 is a next-generation SARM developed from the structure of an older compound, C-6, which was considered less effective. The main chemical modification consists of replacing the para-nitro group at C-6 with a cyano group.
This change has led to a huge improvement in pharmacokinetics: while C-6 showed an oral bioavailability of approximately 76%, Mastorine (S23) achieves up to 96% oral bioavailability , making it extremely effective even at low doses.

Research

Mastorine (S23) is currently in preclinical development and has been studied exclusively in animal models.
Research has shown that S23 is the most suppressive SARM ever tested , inducing complete infertility in treated rats. For this reason, it is of scientific interest as a potential male hormonal contraceptive .
To date, there are no clinical studies in humans.

PEDs User Opinions

In the bodybuilding world, Mastorine (S23) is increasingly popular for its extremely powerful effects on muscle mass and definition .
Many users consider it a more powerful version of Andarine (S4) , without the latter’s typical visual side effects
. Some studies indicate a possible reduction in prostate size, but this effect is common to many SARMs and is dose-dependent , therefore often misunderstood.

Main effects

Extremely effective in building lean muscle mass
Significant increase in strength and performance
Dry, dense and highly defined physical appearance
Improved productivity and workout intensity

Side effects

Very marked suppression of endogenous testosterone
Anecdotal reports of insomnia, irritability, and nervousness , similar to those seen with trenbolone

Effect on the liver

There are currently no specific studies on the hepatotoxicity of Mastorine (S23) .
Despite being the most potent SARM, from a chemical point of view it should be less burdensome on the liver than YK-11 , as it has a lower number of methylated groups.

Testosterone suppression

Mastorine (S23) is widely considered the most testosterone-suppressing SARM currently available.
Its use therefore requires very careful planning and appropriate support strategies.