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S4 is a SARM with little HPT axis suppression and moderate anabolic effects. The compound is more suitable for cutting and recomposition cycles. It allows bodybuilders to maintain or gain lean muscle mass on a calorie deficit, and, consequently, improve muscle-to-fat ratio.

Andarine can be used by both men and women, advanced users and beginners.

S4 Andarine Key Parameters

  • Concentration: 10 mg
  • Quantity: 50 tablets
  • Application: Cutting cycles, lean muscle mass, strength
  • Recommended dosage: 7,5-20 mg per day
  • Cycle length: 6-12 weeks
  • Stack suggestions: RAD-140, GW-501516, MK-677, MK-2866
  • PCT: needed

S4 Andarine by NEO Sarms — Description

Andarine, is a second generation selective androgen receptor modulator, mostly recognized for its fat-burning effects. This compound differs from other SARMs, as it doesn’t convert into DHT or estrogen.

If the bodybuilder is predisposed to shifts in testosterone and estrogen ratio, S4 can be one of the safest options. It doesn’t cause side effects associated with elevated estrogen levels, such as gynecomastia or water retention.

S4 Effects

S4 can be used for different purposes, such as:

  • Increasing lean muscle mass;
  • Promoting fat loss and body recomposition;
  • Enhancing strength and better personal records;
  • Decreasing recovery time.

On a cycle, it is possible to lose 8-10 lbs of fat with a proper diet and workout schedule. The final results depend on the initial body fat percentage (the optimal range is between 10-15%). 

By the 3-4 week, bodybuilders notice major changes in pumps and muscle fullness, increased strength and endurance. As for the bulking cycles, there is an option to stack S4 with more potent SARMs, for example:

  • Bulking: RAD-140, LGD-4033;
  • Cutting: GW-501516;
  • Recomposition: MK-2866, GW-501516.

S4 Side Effects

With minimal dosage and cycle length, there may be no need in post-cycle therapy. If S4 is used in stacks or the dosage exceeds 7.5-10 mg per day, natural testosterone production can be suppressed.

Andarine can cause heightened light sensitivity, night blindness and yellow tinges, affecting the bodybuilder’s vision. These side effects are temporary and disappear after the end of the cycle. However, it’s important to take small breaks to avoid them completely.

The use of S4 can negatively impact the cardiovascular system and liver (shifting HDL and LDL ratio, raising AST and ALT levels).

Most common side effects include: 

  • Vertigo;
  • Acne;
  • Mood swings

There are anecdotal reports of less frequent side effects as well.

S4 Andarine Detailed Compound Profile

Weight50 g
ManufacturerNEOSarms
FormOral tablets
Purity99%
Storage ConditionsRoom temperature
Active CompoundMK-2866
ClassificationSelective Androgen Receptor Modulator
Half-Life4-6 hours
Concentration10 mg per tablet
Shelf Life24 months
FormulaC₁₉H₁₈F₃N₃O₆
SynonymsS4, Andarine, GTX-007
PubChem CID9824562
CAS Registry Number401900-40-1
Original DeveloperGTx

Please consider health contraindications before starting the cycle, purchase the SARMs only through verified NEOSarms Partners to be sure of the compound’s purity, and adhere to the recommended dosage.