PUMP (S-23)
$169.00
Ships from Australia | Discreet packaging
77 in stock
| Bulk Discount | Number of Items | Discount |
|---|---|---|
| Bulk Discount | 2 | 5% $160.55 |
| Bulk Discount | 3 | 10% $152.10 |
| Bulk Discount | 4 | 15% $143.65 |
| Bulk Discount | 5 | 20% $135.20 |
PUMP (S-23) – High-Affinity SARM for Muscle Growth & Fat Loss
PUMP (S-23) is a potent, non-steroidal Selective Androgen Receptor Modulator (SARM) with high binding affinity to androgen receptors, making it stronger than MAINTAIN (MK-2866) and MASS (S-4). This high potency leads to rapid muscle growth, reduced fat mass, and potential prostate size reduction.
Studies indicate that PUMP (S-23) can support both bulking and cutting phases due to its ability to increase muscle mass while promoting fat loss. Additionally, research suggests potential male contraceptive properties, making it a versatile SARM for multiple applications.
How PUMP (S-23) Works
PUMP (S-23) is a research compound studied for its strong binding affinity to androgen receptors in muscle and bone tissue. This selective activity has made it a point of interest in research focused on lean muscle development, strength, and physique refinement, particularly in advanced recomposition and cutting protocols.
Key Benefits of PUMP (S-23)
Powerful Muscle Growth – Stronger than other SARMs, ideal for rapid lean muscle gains.Fat Reduction – Helps decrease body fat while preserving muscle.Enhanced Bone Density – Shown to increase bone mineral density, supporting joint and skeletal health.Potential Male Contraceptive Effects – Temporarily reduces LH & FSH levels, preventing sperm production.Versatile for Bulking & Cutting – Suitable for muscle-building cycles and fat-loss phases.
Why Choose PUMP (S-23)?
PUMP (S-23) is often chosen in advanced research settings for its reputation in supporting a harder, drier, and more defined physique. Its potent profile makes it a strong option for those exploring compounds linked to lean muscle retention, strength, and aggressive body recomposition outcomes.
Take your research to the next level with PUMP (S-23) – a powerful compound for lean muscle retention, physique hardness, and advanced recomposition support.
Recommended Combinations
- For Maximum Muscle Growth → Stack with MASS (S-4) or GAIN (LGD-4033) for enhanced strength and size.
- For Cutting & Recomposition → Pair with MAINTAIN (MK-2866) or SHRED (GW-0742) to maintain lean muscle while reducing fat.
- For Hormonal Recovery → Consider using a Post Cycle Therapy (PCT) protocol after research as this product is very potent.
- AUS LABS CUT STACK → Combines PUMP (S-23) with the potent fat burning and endurance benefits of SHRED (GW-0742) for our most popular fat loss stack.
Dosage Instructions
- Concentration: 20mg/mL
- Volume: 30mL
- Suggested Dosage: 20mg (1mL) per day – A full bottle provides 30 days of research use.
Storage Instructions
- Store in a cool, dark space such as a cupboard or pantry for best stability.
Ingredients / Purity Report
- Active Ingredient: PUMP (S-23) – (2S)-N-(4-cyano-3-trifluoromethylphenyl)-3-(3-fluoro-4-chlorophenoxy)-2-hydroxy-2-methyl-propanamide
- Other Ingredients: Food-grade USP glycol, food-grade ethyl alcohol, and essential oils.
- Purity Analysis: Contact sales@auslabs.email for the latest HPLC purity report.
Medical References
- Thevis, M., Gerace, E., Thomas, A., Beuck, S., Geyer, H., Schlörer, N., Kearbey, J.D., Dalton, J.T., & Schänzer, W. (2010). Characterization of in vitro generated metabolites of the selective androgen receptor modulators S-22 and S-23 and in vivo comparison to post-administration canine urine specimens. Drug Testing and Analysis, 2(11–12), 589–598.
- Marhefka, C.A., Gao, W., Chung, K., Kim, J., He, Y., Yin, D., Bohl, C., Dalton, J.T., & Miller, D.D. (2004). Design, synthesis, and biological characterization of metabolically stable selective androgen receptor modulators. Journal of Medicinal Chemistry, 47(4), 993–8.
- Jones, A., Chen, J., Hwang, D.J., Miller, D.D., & Dalton, J.T. (2009). Preclinical characterization of a selective androgen receptor modulator for hormonal male contraception. Endocrinology, 150(1), 385–95.
Disclaimer
No statements made on this page have been evaluated by the Therapeutic Goods Administration (TGA). This product is not intended to diagnose, treat, cure, or prevent any disease or illness. PUMP (S-23) is strictly for research purposes only. Please refer to the TERMS OF USE for more information.





