View our most up-to-date 3rd party test HERE!

Concentration: 30mL Bottle = 50mg per 1mL

WHAT DOES S-4 DO?
S-4 binds to androgen receptors in skeletal muscle tissue that assists in building lean body mass and helps prevent muscle wastage.

Half Life: 4-6 hours

Sides: 
The famous "yellow tint" is can occur  when S-4 binds to vision receptors. Note, these sides dissipate once S-4 is no longer in the system of the research subject.

Storage:
Store in a cool dry place.

All research chemicals that are sent will be based off the the most up to date third party tests. These third party tests can be found on each individual product page. 

TERMS:
The products that US GAINS offer are intended for laboratory research use only. Please read our terms and conditions.

These research chemicals are NOT intended to treat, prevent, cure, or mitigate disease. These chemicals are NOT for human consumption.