What Is S4 (Andarine)?
S4, also known as Andarine, is a selective androgen receptor modulator (SARM) originally developed to treat muscle wasting, osteoporosis, and benign prostatic hypertrophy. Its ability to promote lean muscle mass, preserve strength, and accelerate fat loss without the harsh side effects of anabolic steroids has made it popular among athletes and bodybuilders. Dragon Pharma formulates S4 in 25 mg tablets, packaged in a bottle of 100 tablets—ideal for complete cycles or stacking protocols.
As a SARM, Andarine binds selectively to androgen receptors in muscle and bone tissue, stimulating growth and density while minimizing effects on the prostate and internal organs. According to research published in the National Institutes of Health, SARMs like S4 offer anabolic effects with reduced androgenic impact, making them safer alternatives to traditional AAS for certain users.
How Dragon Pharma S4 Is Used in Bodybuilding
Bodybuilders use Andarine for cutting and recomposition cycles, thanks to its ability to retain muscle during calorie deficits while promoting fat oxidation. Men benefit from enhanced vascularity, dry muscle gains, and strength maintenance throughout prep phases. Women also find S4 appealing for its ability to sculpt lean muscle without virilization, when used at lower doses.
S4 does not convert to estrogen or DHT, making it suitable for users aiming to avoid water retention and gynecomastia. Its short half-life also allows for flexible dosing schedules and faster recovery post-cycle.
Example of an S4 Cycle
Here’s a typical cycle protocol for Dragon Pharma S4:
- Cycle Length: 6–8 weeks
- Dosage (Men): 50 mg/day, split into two doses (morning and evening)
- Dosage (Women): 12.5–25 mg/day
- PCT: Mild PCT may be required using products like Clomid or Nolvadex
To avoid night vision disturbances (a known S4 side effect), some users implement a 5-days-on, 2-days-off dosing pattern or reduce the daily dose slightly during the final 2 weeks.
Best Stacks with S4 for Enhanced Results
S4 is frequently stacked with other SARMs and performance enhancers to support various goals:
- MK-2866 (Ostarine) – Ideal for muscle preservation during cutting
- LGD-4033 (Ligandrol) – Helps increase strength and size in lean bulk cycles
- GW501516 (Cardarine) – Supports endurance, fat loss, and metabolic health
- Enclomiphene – Often used post-cycle for hormonal recovery
These combinations help amplify S4’s effects while minimizing potential side effects and hormonal suppression.
Possible Side Effects of S4 (Andarine)
While generally well-tolerated, S4 may cause temporary side effects, especially at higher doses:
- Night vision disturbances (yellow tint or light sensitivity)
- Testosterone suppression (mild to moderate)
- Headaches or mild fatigue
Side effects usually resolve quickly after discontinuation or dose adjustment. Users are encouraged to monitor their response and reduce dosage if needed.
S4 Reviews and User Feedback
Bodybuilders who use Dragon Pharma’s Andarine report steady fat loss, increased muscle hardness, and consistent gym performance. Results are often noticeable by week 2, especially when paired with a clean diet and proper training program.
To read more about real-world results and cycle feedback, check out this roundup of Dragon Pharma S4 Reviews shared by experienced SARM users. If you’re new to Andarine or SARMs in general, this complete overview of Dragon Pharma S4 breaks down its benefits and usage protocols.
Conclusion
Dragon Pharma S4 offers a powerful, non-steroidal approach to lean muscle preservation and fat reduction. Ideal for both men and women, it provides a dry, aesthetic physique without the hormonal complications of traditional gear. Whether you’re cutting, recomposing, or stacking for peak performance, S4 delivers results backed by science and user experience.
