Description

Technical Parameters

MK -2866 (Ostarine) 10mg 100 tablets/bottle Core Description *

Pharmaceutical -grade formulation | MK-2866 (selective androgen receptor modulator )

Chemical name : (2S)-3-(4-cyanophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropionamide

CAS number : 841205-47-8

Molecular formula : C₂₁H₁₅F₃N₃O₃

Molecular weight : 422.36

Specifications : 10mg/tablet, 100 tablets/bottle

Dosage form : Film-coated tablets

Appearance : White round film-coated tablets with a dividing line

Core Effects

MK-2866 is a highly selective androgen receptor modulator (SARM) that is widely used for muscle growth, strength improvement, and physique improvement due to its potent anabolic activity and minimal androgenic side effects .

✅ Precise targeting mechanism :

Selective activation : Specific binding to androgen receptors in muscle and bone

Tissue selectivity : Lower activity in tissues such as the prostate, reducing side effects

Powerful anabolic effect : Promotes protein synthesis and increases muscle mass

✅ Excellent muscle-building effect :

Lean body mass increase : 8 weeks can increase lean body mass by 3-5kg

Significant strength gains : Increase core lift weights by 15-25%

Improved muscle firmness : Increased muscle density and definition

✅ Unique metabolic properties :

Oral high efficiency : high bioavailability, no injection required

Moderate half-life : about 24 hours, once a day is sufficient

No aromatization : No conversion to estrogen, no risk of water retention

✅ Advantages :

High selectivity : muscle-specific effects with few side effects

Oral convenience : once daily, easy to use

Reliable results : Preclinical studies show clear muscle-building effects

End Product Preparation Guidelines

1. Preparation of film-coated tablets (10 mg/tablet) :

Example recipe (for 1000 tablets):

MK-2866 raw material: 10.0g

Microcrystalline cellulose: 80.0g

Lactose: 50.0g

Cross-linked carboxymethyl cellulose sodium: 8.0g

Magnesium stearate: 2.0g

Preparation process :

Raw material pretreatment : micronization (D90≤10μm)

Equal amount incremental mixing : gradually mix with diluent

Wet granulation : granulate with appropriate amount of purified water and dry in fluid bed at 50°C

Granulation : 20 mesh sieve granules, add flow aids and lubricants

Tableting : 8mm round die, 8-10kN pressure tableting

Film coating : Gastro-soluble film coating to improve appearance and stability

Quality Control :

Content uniformity : RSD≤3% (HPLC detection)

Dissolution rate : ≥85% in 30 minutes (paddle method, 50 rpm)

Related substances : Single impurity ≤ 0.5%, total impurities ≤ 1.0%

2. Preparation Notes :

Moisture-proof treatment : Raw materials are easy to absorb moisture, so the ambient humidity needs to be controlled

Light-proof operation : Light-sensitive, need to be handled and packaged in a dark place

Stability control : Accelerated test for 6 months to meet the standards

Usage Protocol

1. Male use plan :

Standard cycle :

Dosage: 10-25 mg/day, once daily

Duration: 8-12 weeks

Effect: Increase muscle mass by 3-5kg and significantly improve strength

Advanced Cycle :

Dosage: 25-50 mg once daily

Duration: 6-8 weeks

Effect: Extreme muscle growth effect

2. For women :

Standard dosage :

5–10 mg/day once daily

Duration: 6-8 weeks

Expected results :

Lean body mass increased by 1-2kg

Improved muscle definition and reduced fat

3. Recommended timing for use :

Best time : Take in the morning with breakfast

Training Days : Take 1-2 hours before training

Non- training days : Take at a fixed time

4. Post-cycle therapy (PCT) :

PCT Necessity :

If the cycle exceeds 8 weeks, PCT is recommended

PCT is recommended for doses exceeding 25 mg/day

PCT Program :

Tamoxifen: 10–20 mg/day for 4 weeks

Clomiphene: 25-50 mg/day for 4 weeks

5. Dosage adjustment guidelines :

Starting dose : 10 mg/day for 2 weeks

Increasing regimen : Increase by 5 mg every 2 weeks

Maximum dose : no more than 50 mg/day

Why choose MK-2866?

High selectivity : Muscle-specific effects with minimal side effects

Powerful Muscle Gainer : Significantly increase lean body mass and strength

Oral convenience : No injection required, easy to use

Quality Assurance :

GMP -compliant production : Content uniformity testing for each batch

Stability test : Accelerated test for 6 months meets the standards

Third-party laboratory report (COA) is included with the product

Professional Packaging :

Moisture-proof bottle : 100 tablets/bottle, built-in desiccant

Light- proof : Brown glass bottle or aluminum-plastic blister

Child safety cap : prevent children from accidentally swallowing

Conclusion

MK-2866 is a leading selective androgen receptor modulator (SRM) product , particularly suitable for muscle growth, strength enhancement, and physical fitness improvement . The recommended dose is 10-25mg/day for 8-12 weeks .

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