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S4 and Cardarine Stack


Original price was: $119.99.Current price is: $109.99.

Selling fast! Get yours today! Same-day shipping available

Our Cardarine and S4 Stack includes one discounted 30ml 20mg/ml bottle of Cardarine and one discounted 30ml 50mg/ml bottle of S4. Stack the savings!

Data on our Liquid S4 for sale

CAS Number: 401900-40-1

Formula: C19H18F3N3O6

Molar Mass: 441.357

Class: Selective Androgen Receptor Modulator

Storage: Store in a cool dry place away from direct sunlight to maximize shelf life.

Data on Our Liquid Cardarine for Sale

CAS Number: 317318-70-0

Formula: C21H18F3NO3S2

Molar Mass: 453.498 g/mol

Half life: 16 – 24 hours

Class: PPAR Agonist

Storage: Store in a cool dry place away from direct sunlight to maximize shelf life.

  • Each bottle includes a graduated 1mL glass pipette for convenient measurement.
  • Glass bottle with UV resistance to minimize degradation.
  • Tamper-proof seal to ensure safety in transit.
  • Less than 5% variance in concentration, guaranteeing consistency.
  • Formulated and packaged to prevent evaporation in storage.

This preparation is for laboratory research purposes only and is not approved by the FDA for human use. S4 / ANDARINE AND CARDARINE / GW501516 ARE NOT DIETARY OR SPORTS SUPPLEMENTS.

Why is Sports Technology Labs the best place to buy SARMs online?

A recent study involving chemical analyses of 44 different products sold and marketed as Selective Androgen Receptor Modulators on the internet revealed that quality control in this industry varies greatly from one company to the next.

Only 52% of the products tested contained the product advertised, 59% contained amounts that differed from the label, a shocking 39% contained other unapproved drugs, 25% contained substances not listed on the label, and 9% contained no active substance at all.

It is critical when performing research with SARMs to only purchase the highest quality, verified by third party analysis. If you are trying to figure out where to buy SARMs, there appears to be no shortage of options out there.

Sports Technology Labs is the best place to buy SARMs online because of their consistent, verifiable high quality products, safe bottling and packaging, fast shipping, and great customer service.

When you buy SARMs stacks from Sports Technology Labs you are choosing the highest quality ingredients. Minimum 98% pure compounds tested and certified by accredited American third party labs, suspended in USP grade (the highest grade) PEG400, bottled in America. 

Our products come in glass bottles with fixed glass droppers to prevent the leaching of unwanted plasticizers like BPA, and prevent contamination between testing with external measuring tools. 

We run a transparent business, with no discreet payment methods necessary and no misrepresentation of our products, only the highest quality research chemicals available online, secured by our 60-day money-back guarantee. 

We provide free shipping for orders exceeding $149, and for those who require expedited delivery, we also offer express shipping. Customers who subscribe to our email list enjoy a 10% discount, and an extra 10% off when paying with cryptocurrency.

At Sports Technology Labs you can find SARMs for sale, including the highest quality GW501516 and Andarine for sale anywhere on the internet. That’s why we are confident in our claim that we offer the best SARMs for sale on the market today.

And if you have any questions about our  products, you can also contact us and we’ll respond as soon as possible.

Abuse Warning

Selective Androgen Receptor Modulators are investigational compounds still awaiting FDA approval and are not dietary supplements. At Sports Technology Labs we are chemical suppliers, not medical doctors, and our expertise is sourcing and quality control.

Sports Technology Labs does not encourage or condone consumer use of SARMs products, they are for research purposes only.

Anecdotal reports and guides may not match those used in carefully designed medical research protocols and may pose a serious risk of adverse effects in users.

Individual variables, comorbidities, and polypharmacy can also contribute significantly to the risk of health problems.

Selective Androgen Receptor Modulators should only be used under the supervision and direction of a medical doctor or designated research authority.

We strongly discourage the use of SARMs for performance enhancement in sports and bodybuilding, and warn against “bro science” and peer consensus when making decisions about health.

FAQ For Cardarine and S4

Cardarine is a PPARδ agonist being studied for its endurance-boosting and fat-burning effects. It is not approved for human use by the FDA, and there is limited research on its safety and efficacy.

S4 is a selective androgen receptor modulator (SARM) that is being studied for its muscle-building and fat-burning effects in mammals. It is also not approved for human use by the FDA, and there is limited research on its safety and efficacy.

Cardarine and S4 are both research chemicals, and there is limited research on their long-term safety and efficacy. Potential risks being studied include liver damage, kidney damage, and cardiovascular problems.


1. Van Wagoner RM, Eichner A, Bhasin S, Deuster PA, Eichner D. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017 Nov 28;318(20):2004-2010. doi: 10.1001/jama.2017.17069. Erratum in: JAMA. 2018 Feb 20;319(7):724. PMID: 29183075; PMCID: PMC5820696.

2. Bianchi, V. E., & Locatelli, V. (2023). GW501516 (Cardarine): Pharmacological and Clinical Effects. Genet Mol Med, 5(1), 1-12.

3. Fonseca, G. W. P. D., Dworatzek, E., Ebner, N., & Von Haehling, S. (2020). Selective androgen receptor modulators (SARMs) as pharmacological treatment for muscle wasting in ongoing clinical trials. Expert Opinion on Investigational Drugs29(8), 881-891.

4. Kintz, P., Gheddar, L., Paradis, C., Chinellato, M., Ameline, A., Raul, J. S., & Oliva-Labadie, M. (2021). Peroxisome proliferator-activated receptor delta agonist (PPAR-δ) and selective androgen receptor modulator (SARM) abuse: clinical, analytical and biological data in a case involving a poisonous combination of GW1516 (cardarine) and MK2866 (ostarine). Toxics9(10), 251.

5. Mohamed, W. T., Jahagirdar, V., Fatima, I., Ahmed, M. K., Jaber, F., Wang, K., … & Ewing, D. E. (2023). Selective Androgen Receptor Modulators (SARMs)-Induced Liver Injury: A Case Report and Review of Literature. Cureus15(2).