SARMs
Latest laboratory result 12.43 mg/tablet April 18, 2025 · 124.3% of label claim · Batch HDS23923 View
S 23
Product Details Dragon Pharma
Active Substance Mastorin Selective androgen receptor modulator (SARM)
Strength 10 mg/tablet
Package 100 tablets 1,000 mg total labeled content
Form Oral tablets
Estimated Half-Life Approximately 12 hours Estimate based primarily on preclinical data
Water Retention Not established Limited human safety data
Aromatization No Not an aromatizable steroid
Primary Concerns Hormonal and reproductive suppression Investigational compound with limited human safety data
$60.00
Shipping Location :
International
U.S. Domestic
Dragon Pharma S 23 10 mg
DragonPharma.Net is a verified distributor of Dragon Pharma SARMs. We offer authentic S 23 (Mastorin) 10 mg tablets with fast USA domestic and international shipping. Backed by lab-tested purity, this SARM is ideal for advanced users targeting extreme definition and strength.
What is S 23?
S 23, also known as Mastorin, is a selective androgen receptor modulator (SARM) designed to bind with high affinity to androgen receptors in muscle and bone. It's particularly known for promoting muscle hardness, vascularity, and fat loss—making it a popular choice during cutting phases or pre-contest preparation. Compared to other SARMs like Ostarine (MK 2866) or Ligandrol (LGD 4033), S 23 is significantly more suppressive and potent.
Product Details
Active Substance
Mastorin: 10 mg per tablet
Form
Oral Tablets
Dosage
10 mg per tablet
Quantity
100 Tablets
Brand
Dragon Pharma
Availability
USA Domestic & International
Dosage & Usage Guidelines
Most users cycle S 23 at 10–20 mg/day for 6 to 8 weeks. Due to its half-life (~12 hours), split dosing may help maintain more stable blood levels. It is commonly stacked with other SARMs such as Cardarine (GW501516) for enhanced endurance and fat loss synergy. Because of its powerful binding affinity, this compound is best suited for experienced users.
Potential Side Effects of S 23
- Testosterone Suppression: Highly suppressive and requires a proper PCT.
- Libido Changes: May temporarily reduce sex hormone levels.
- Aggression or Mood Fluctuations: Reported by some users on higher doses.
S 23 is non-aromatizing, so there is no water retention or gynecomastia risk. However, its strong androgenic nature means virilization in women is highly likely—this compound is not recommended for female use.
Post-Cycle Therapy (PCT)
Following a cycle of S 23, post-cycle therapy is essential. We recommend starting Clomid (50 mg/day) or Nolvadex (20 mg/day) for 4 weeks to restore natural testosterone production. Visit our Post-Cycle Therapy category for additional hormonal recovery options.
Example S 23 Cycle
| Week | S 23 | Optional Add-ons |
|---|---|---|
| 1–4 | 10–20 mg/day | GW501516 (10–20 mg/day) |
| 5–8 | 10–20 mg/day | Continue support or add LIV 52 |
| 9–12 | PCT | Clomid / Nolvadex |
Important: Individual response varies. Dosing strategies, support supplements, and recovery protocols should be tailored based on experience, goals, and bloodwork where applicable.
Batch-Tested & Verified Lab Results
2025-04-18
12.43 mg/tab
2024-01-03
9.97 mg/tab
Shipping & Product Authenticity
USA Domestic
4–5 business days
International
13–15 business days
Order Processing
24–48 business hours
Tracking
Provided after dispatch (may activate once in destination country)
Direct Supply & Discreet Delivery
This product is sourced through official Dragon Pharma distribution channels and delivered in original manufacturer packaging. All orders are shipped using discreet packaging with no unnecessary external labeling, ensuring privacy, security, and reliable delivery.
What to Expect
- ✔ Orders are processed after payment confirmation
- ✔ USA domestic shipping is faster when local warehouse stock is selected
- ✔ International shipments include tracking (updates may be delayed during transit)
- ✔ Orders may ship from multiple warehouses depending on availability
- ✔ Free reshipment is available if delivery is not completed within 30 days
Authenticity support: all Dragon Pharma products are supplied in original packaging with batch identification and may include independent lab verification to help confirm product consistency and authenticity.
Verified Supply
For full delivery timelines, tracking details, and reshipment policy, please visit our Shipping Info page.
Storage
Store at controlled room temperature (15–25°C / 59–77°F) in a dry place, protected from direct light, heat, and moisture. Proper storage conditions help maintain tablet stability and overall product quality.
Keep the tablets in their original packaging until use to protect them from environmental exposure. Avoid excessive humidity and do not store in bathrooms or other damp areas.
Inspect tablets before use and avoid consumption if they appear damaged, discolored, or compromised. Keep out of reach of children and store securely.
Frequently Asked Questions
What is S 23 used for?
S 23 is a selective androgen receptor modulator (SARM) used during cutting cycles to promote lean muscle growth, strength, and fat loss without water retention.
What's the recommended dosage of S 23?
Typical doses range from 10 to 20 mg per day for 6–8 weeks. Beginners should start at 10 mg/day to assess tolerance.
Does S 23 require post-cycle therapy?
Yes, S 23 is suppressive and requires PCT using Clomid or Nolvadex to restore testosterone production.
Is S 23 suitable for women?
S 23 is not recommended for women due to its strong androgenic properties and high risk of virilization.
Where can I buy Dragon Pharma S 23 online?
You can buy lab-tested Dragon Pharma S 23 from our trusted store with fast USA domestic or international shipping.
Related Offers
Lab Tested
Shipped USA Domestic
Dragon Pharma, Europe
Product Details Dragon Pharma
Active Substance Ibutamoren (MK-677) Growth hormone secretagogue / ghrelin receptor agonist
Strength 25 mg/tablet
Package 100 tablets 2,500 mg total labeled content
Form Oral tablets
Estimated Half-Life Approximately 24 hours
Water Retention Possible Mild edema has been reported in clinical studies
Aromatization Not applicable Not an androgenic steroid
Primary Concerns Blood glucose, insulin sensitivity and fluid retention Investigational compound with limited long-term safety data
$160.00
Lab Tested
Domestic & International
Dragon Pharma, Europe
Product Details Dragon Pharma
Active Substance Ligandrol (LGD-4033) Selective androgen receptor modulator (SARM)
Strength 15 mg/tablet
Package 100 tablets 1,500 mg total labeled content
Form Oral tablets
Estimated Half-Life Approximately 24–36 hours
Water Retention Not typically associated
Aromatization No Does not convert to estrogen through aromatase
Primary Concerns Hormonal suppression, lipid changes and liver injury Not approved for human therapeutic use
$95.00
Lab Tested
Domestic & International
Dragon Pharma, Europe
Product Details Dragon Pharma
Active Substance Ostarine (MK-2866) Selective androgen receptor modulator (SARM)
Strength 25 mg/tablet
Package 100 tablets 2,500 mg total labeled content
Form Oral tablets
Estimated Half-Life Approximately 24 hours
Water Retention Not typically associated
Aromatization No Does not convert to estrogen through aromatase
Primary Concerns Hormonal suppression, lipid changes and liver injury Not approved for human therapeutic use
$90.00
Lab Tested
Domestic & International
Dragon Pharma, Europe
Product Details Dragon Pharma
Active Substance YK-11 Steroidal selective androgen receptor modulator (SARM)
Strength 10 mg/tablet
Package 100 tablets 1,000 mg total labeled content
Form Oral tablets
Estimated Half-Life Not established in humans Limited pharmacokinetic data
Water Retention Not established Limited human safety data
Aromatization Not established Human endocrine effects are insufficiently characterized
Primary Concerns Hormonal and liver effects Experimental compound with limited human safety data
$145.00
Lab Tested
Domestic & International
Dragon Pharma, Europe
Product Details Dragon Pharma
Active Substance Cardarine (GW501516) PPARδ receptor agonist
Strength 20 mg/tablet
Package 100 tablets 2,000 mg total labeled content
Form Oral tablets
Estimated Half-Life Approximately 16–24 hours
Water Retention Not typically associated
Aromatization No Not an androgenic or estrogenic compound
Primary Concerns Long-term safety and carcinogenicity concerns Not approved for human therapeutic use
$90.00
October 16, 2024
With S 23, my physique changed quickly, and my energy levels remained high. I achieved consistent muscle gains and improved my overall focus during training.