≥98% S-4 (Andarine)

≥98% S-4 (Andarine)


  • Alias: S4; Andarin; S-4; S-40503.
  • CAS ID: 401900-40-1.
  • Melting point: 72.1-73.6°C.
  • Appearance: light yellow fine powder.
  • Description
  • Steroid Calculator
  • Reviews (0)



S-4 (Andarine) Powder Overview.

S-4 (Andarine) is an orally active partial agonist for androgen receptors, S-4 is effective in not only maintaining lean body mass but actually increasing it. Andarine is less potent in both anabolic and androgenic effects than other SARMs.

Must-Know For S-4 (Andarine) Powder.

Once your S-4 (Andarine) powder is received, please store it in a vacuumed and sealed dry container and put it in cool area at around -20°C. The shelf life is 3 years if stored properly.

  • S-4 (Andarine) powder appears as Pale yellow fine powder, odorless, acrid bitter taste. It’s ready for making capsules or oral liquids once received.
  • S-4 (Andarine) is less potent in both anabolic and androgenic effects than other SARMs, but it increases and maintaining lean mass. 
  • The common strength was made for YK11 (YK-11) oral liquids is 25mg/ml with powder and necessary solvents.

More About S-4 (Andarine) (Powder).

S-4 (Andarine) was shown to reduce prostate weight with similar efficacy to finasteride, but without producing any reduction in muscle mass or anti-androgenic side effects. This suggests that S-4 (Andarine) is able to competitively block binding of dihydrotestosterone to its receptor targets in the prostate gland, but its partial agonist effects at androgen receptors prevent the side effects associated with the anti-androgenic drugs traditionally used for treatment of BPH.

S-4 (Andarine) for cutting and strength gains. As for the properties of S-4 (Andarine) (lean mass maintaining and increasing), andarine is often compared to winstrol or anavar, while S-4 (andarine) provides better effects on lean muscle gains. What’s more, S-4 (andarine) also decreases fat while maintaining and even boosting muscle mass in a hypocaloric environment.

S-4 (andarine) recommended dosage for recomping is 50-75 mg for 4 to 8 weeks. If S-4 (andarine) is used with a more anabolic SARM such as Ostarine, the results of recomping will be better if you’re aiming to gain muscles while losing fat.

How to use S4 to reduce gynecomastia (gyno)?

Running 20mg a day 6 days on 1 off for 6-10 weeks not only reduces body fat, but it has been used by me in conjunction with the only other compound I’ve ever seen reduce gyno – Letrozole (femara). Using 0.5 mg of Letrozole 3 x a week in conjunction with the S4 shows great promise in reducing steroid induced gynecomastia (gyno).

How to use S4 safely?

To negating any side effects, S-4 should be dosed at 5 days on 2 off at 50mg. If you go above 50mg you will lose some night vision if the quality of S4 you got is good. S-4 has a very short half life, 2.6 hours, so it would be perfect to use as a pulse, 3 times a week 2 hours before training should give excellent strength and hardening results. Both those protocols will reduce the yellow eye, and night vision problems. Remember, a PCT (post cycle therapy) should be always carried out after using S4.
If you want the effects faster, the recommended dosage for cutting is 50 mg for 6-8 weeks. It should be used every day then take 2 days off for the duration. Taking S-4 daily for the length of the cycle can lead to obvious changes by eyesight.

900x180 brewing guide-steroid powder to oil calculator

Brewing guide - steroid powder to oil calculator


How to use this Anabolic Steroid calculator

To calculate 40ml of oil at 100mg/ml with 2% ba and 18%
(1) In the oil field enter 40
(2) In the dosage field enter 100
(3) Unless you know for sure, usually leave powder weight alone.
(4)  BA Concentration is set at  2%, if you wanted less, then change it accordingly
(5) BB concentration is set at  18%, if you wanted less, then change it accordingly
(6) You should now have the results :
Oil = 29mls
Powder = 4 grams
BA = 0.80ml's
BB = 7.20mls

Notes: BB is not always needed in certain experiments BB = benzyl benzoate BA = benzyl alcohol
Enter Amount Required
Total oil in mL  40ml = 40
Dosage in mg/mL   250mg/ml = 250
Powder Weight  normally .75 to .94
BA percent  2% = 0.02
BB percent   20% = 0.20
Results - Amounts Needed
GSO / Carrier Oil - - ml's
Powder - - grams
BA - - ml's
BB - - ml's


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