Free shipping on orders over $250
Home | S4


Product | S4


S4 (Andarine) is one of the first and most researched SARMs. Modern Aminos’ S4 products are routinely tested for authenticity and quality.




Earn up to 68 points.

Dont Forget to buy


One of the original and most researched SARMs, and a consistent bestseller, S4 (andarine) is one of the most popular selective androgen receptor modulators (SARMs) offered here at Modern Aminos.


To accommodate the varied needs of researchers, we offer two versions of this product:

  • S4 25mg capsules (60 capsules per bottle)
  • S4 50mg/ml liquid (30ml bottle)


Precision, purity, and quality are always our biggest priorities here at Modern Aminos, hence why we routinely test our S4 products for authenticity and quality.


For more information regarding the quality and authenticity of our products, please visit our COAs page. You may also contact us at


Why Choose Modern Aminos?

Modern Aminos is a trusted US Research Chemicals vendor and the best place to buy SARMs online. 

If you’re looking to buy research chemicals online, our one-stop-shop offers a wide range of third-party tested, high-quality research chemicals made in the USA — including highest quality amino acids, quality nootropics like Piracetam 800mg and Noopept 30mg, peptides, research oils, and more!





The products available for purchase from Modern Aminos are intended solely for research and laboratory use. These compounds are not designed for human consumption or the diagnosis, treatment, cure, or prevention of any disease or condition.

All customers are presumed to be research professionals who understand that any compounds purchased from Modern Aminos will be handled in accordance with safety protocols mandated by their respective regulatory agencies.

Modern Aminos does not endorse the use of these products in a non-clinical setting or any other non-laboratory-based operations. By purchasing any of these compounds, you acknowledge that you will use them for legitimate research purposes only.

Modern Aminos shall not be held liable for injuries or damages resulting from the handling or use of our products. If you do not agree with these conditions, we advise  you not to proceed with the purchase of any research compounds from our company.


Be the first to review.

Your email address will not be published