S23 (Mastorin) 10mg Tablets by Dragon Pharma - Hard Dry Gains & Contest Prep Weapon

S23 (also known as Mastorin) by Dragon Pharma is one of the most powerful anabolic SARMs ever created, designed for experienced athletes chasing hard, dry muscle gains and extreme conditioning.
Available in precise 10mg tablets, S23 delivers an androgenic, muscle-hardening effect that rivals traditional anabolic compounds - without aromatization or estrogen-related water retention.

This profile focuses on S23 as a **contest-prep and dry-gains compound**, where muscle density, hardness, and strength retention matter more than scale weight. If your goal is a grainy, vascular, stage-ready look, S23 stands at the top of the SARM category.

Why S23 Is Considered the Strongest Anabolic SARM

S23 binds aggressively to androgen receptors in muscle tissue, promoting lean mass retention, increased strength, and dramatic improvements in muscle density.
Unlike bulking SARMs that add fullness and water, S23 creates a dry, tight appearance similar to Masteron or Winstrol - which is why advanced users often call it "the dry SARM."

Dragon Pharma's pharmaceutical-grade tablet format ensures stable dosing, consistent blood levels, and easy integration into contest prep or recomp cycles.

Key Benefits for Contest Prep Athletes

• Extremely hard, dry muscle appearance
• Significant strength retention during calorie deficits
• Zero estrogen conversion (no water retention or gyno)
• Increased vascularity and muscle separation
• High androgenic drive for dense, mature-looking muscle
• Convenient oral tablet dosing (10mg per tab)

Dosage Recommendations (Advanced Users Only)

Beginner (advanced SARM users): 10mg per day
Standard Contest Prep: 20mg per day (split AM/PM)
High-End / Peak Phase: 30mg per day (maximum recommended)

Cycle length typically runs 6-8 weeks due to S23's potency.
Because S23 is suppressive, a proper PCT is mandatory after the cycle.

Best Stack Combinations

S23 + GW-501516 (Cardarine): Improves endurance, fat loss, and conditioning while maintaining strength
S23 + SR9009: Enhances fat oxidation and metabolic output during prep
S23 + Anavar / Winstrol: Advanced contest stack for extreme hardness (experienced users only)
S23 + Testosterone Base: Helps maintain libido and hormonal balance during cycle

Comparison Table

Compound	Dry Gains	Strength	Water Retention	Best Use
S23 (Mastorin)	★★★★★	★★★★★	None	Contest prep / cutting
RAD-140	★★★☆☆	★★★★☆	Low	Lean mass gain
LGD-4033	★★☆☆☆	★★★★☆	Moderate	Bulking

Side Effects & Safety Notes

S23 is highly suppressive and intended for advanced users only.
Testosterone suppression is expected - a proper PCT protocol is mandatory.
Not recommended for beginners or users without cycle experience.

Frequently Asked Questions

Is S23 stronger than RAD-140?
Yes. S23 is significantly more androgenic and better suited for dry gains and contest prep.

Does S23 cause water retention?
No. S23 does not aromatize and produces a very dry, hard look.

Is PCT required after S23?
Absolutely. S23 is suppressive and requires a full PCT protocol.

Can S23 be used for bulking?
It can preserve lean mass, but it's not ideal for bulking due to appetite suppression and dryness.

Is S23 legal?
S23 is a research compound and not approved for human consumption. Use responsibly.