Description

Technical Parameters

Andarine S4 (S-4) 10mg 100 tablets/bottle Core Description *

Pharmaceutical -grade formulation | Andarine S4 (selective androgen receptor modulator )

Chemical name : N-[(2S)-1-[(4-cyanophenoxy)methyl]-2-hydroxy-2-methylpropyl]-4-bromo-2-trifluoromethylbenzamide

CAS number : 401900-40-1

Molecular formula : C₂₁H₁₉BrF₃N₂O₃

Molecular weight : 493.29

Specifications : 10mg/tablet, 100 tablets/bottle

Dosage form : Film-coated tablets

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

Core Effects

Andarine S4 is a partial agonist selective androgen receptor modulator (SARM) that is widely used for muscle growth, fat loss cycles, and athletic performance enhancement due to its unique tissue selectivity and vision-related side effects .

✅ Partial excitation mechanism :

Tissue selectivity : acts as a full agonist in muscle and bone, and as a partial agonist in tissues such as the prostate

High affinity : Has high affinity for androgen receptors

Dose- dependent : Low doses promote anabolic steroids, while high doses may produce antagonistic effects.

✅ Unique fat-reducing and muscle-building effects :

Lean Mass Gain : Significantly improves muscle mass and strength

Fat loss : Promotes fat oxidation and improves body composition

Muscle Hardness : Increases muscle density and definition

✅ Vision-related side effects :

Dose dependence : Night vision may decrease with increasing dose

Reversibility : Visual side effects are usually reversible after discontinuation of the drug.

Yellow tint : May increase sensitivity to yellow light

✅ Advantages :

Tissue selectivity : reducing the side effects of traditional steroids

Orally effective : High bioavailability, no injection required

Short half-life : approximately 4-6 hours, facilitating dosage adjustments

End Product Preparation Guidelines

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

Example recipe (for 1000 tablets):

Andarine S4 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 stability

Quality Control :

Content uniformity : RSD≤3% (HPLC detection)

Dissolution rate : ≥85% dissolved in 30 minutes

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

2. Preparation Notes :

Moisture-proof treatment : The raw material is hygroscopic and the ambient humidity needs to be controlled

Light-proof operation : sensitive to light, need to be packaged in a light-proof manner

Temperature control : The temperature during the preparation process does not exceed 60°C

Usage Protocol

1. Male use :

Standard cycle :

Dosage: 25-50 mg/day, divided into 2-3 doses

Duration: 6-8 weeks

Effect: Lean body mass increased by 2-4kg, fat decreased by 3-5%

Fat loss cycle :

Dosage: 50 mg/day, divided into 2 doses

Duration: 8 weeks

Results: Significantly improved muscle definition

2. Female use plan :

Standard dose :

10-25 mg/day, divided into 1-2 doses

Duration: 4-6 weeks

Expected results :

Lean body mass increased by 1-2kg

Muscle lines are significantly improved

3. Dose adjustment strategy :

Starting dose : 25 mg/day for 1 week

Increasing regimen : Increase by 25mg every 3-4 days

Maximum dose : no more than 100 mg/day

4. Management of visual side effects :

Dose fraction : Divide the daily dose into 2-3 doses

Medication Holiday : 5 days on, 2 days off

Nighttime precautions : Avoid driving or operating machinery at night

5. Post-cycle therapy (PCT) :

PCT Necessity :

If the cycle exceeds 6 weeks, PCT is recommended

PCT is recommended for doses exceeding 50 mg/day

PCT Program :

Tamoxifen: 10 mg/day for 3 weeks

Clomiphene: 25 mg/day for 3 weeks

Why choose Andarine S4?

Unique partial agonist mechanism : higher tissue selectivity than traditional SARMs

Significant fat-reducing effect : Especially suitable for fat-reducing and muscle-sculpting cycles

Short half-life : facilitates dose adjustment and side effect management

Quality Assurance :

GMP -compliant production : strict quality control system

Stability verification : Accelerated test for 6 months meets the standards

Third-party test report : COA certificate is provided for each batch

Professional Packaging :

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

Light-proof protection : aluminum-plastic blister + light-proof bottle double protection

Child safety cap : prevent children from accidentally swallowing

Conclusion

Andarine S4 is a selective androgen receptor modulator with a unique mechanism of action , particularly suitable for fat loss cycles, muscle shaping, and athletic performance enhancement . The recommended dose is 25-50mg/day for a 6-8 week cycle .

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