Strength: 1500 mg per bottle | 50 mg / ml
LOT #: 200514S4
Lab Results: 98.1%
Ingredients: Polyethylene Glycol, S4


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S4 is also known as Andarine, S-40503, or GTx-007. It’s a selective androgen receptor modulator (SARM) that targets androgen receptors for muscles and bones. The purpose of its development was to help treat osteoporosis and muscle wasting.

Research studies and human trials

Presently there are no human trials for S-4 Andarine. Most of the tests done are through animal studies.
A 120-day study involving ovariectomized rats, S-4 Andarine was able to maintain bone mass and bone strength. The results were greater compared to dihydrotestosterone (DHT) treatment.

In a different clinical trial, S-4 was able to improve skeletal muscle strength, increase lean body mass, prevent bone loss, as well as lower body fat in rats. Possible pharmacologic effects were also noted for benign prostatic hypertrophy.

In another study, a 4-week administration of S-4 in orchiectomized rats there was a marked increase in bone mineral density and muscle weight. The intensity of the effect was similar to that of DHT.

S4 Andarine Side Effects

S4 Andarine does not result in prostate enlargement as steroidal enhancers do. However, clinical trials on humans did not push through.

Other researchers noted that S-4 Andarine’s side effects have a possibility to be dose-dependent. Observed were vision disturbances such as light sensitivity, night blindness, and yellowish vision. Symptoms gradually disappear upon discontinuing the compound.

S-4 Andarine, however, is suppressive. Depending on your level of suppression, you may either need to take a mini or full PCT to counteract suppression as well as side effects.

Researchers found that presence of sides and suppression occurs when there is abuse in the administration of S-4 Andarine.


Each batch of our biotech SARMs gets tested in a third-party analysis. The S-4 Andarine must past US lab standards of safety and authenticity. It’s legal to purchase our S-4 Andarine in the United States, European Union, as well as parts of Asia – provided that use of S-4 Andarine is for clinical and laboratory research only. Compounds that you get from SelectSARMs are not to be mislabeled or misused as a pesticide or agricultural products, drug, additives, or household chemical. The law prohibits application and use of S-4 in humans and animals. You’re only allowed to use S-4 if you’re a qualified professional and researcher. S-4 Andarine is for research purposes only. Please be familiar and understand the laws fully in your area as well as legalities prior to purchasing S-4 Andarine.

Buy S4 Andarine

Our S4 Andarine is a select androgen receptor modulator (SARM). It’s one of the biotech SARMs that is popular among researchers. If you want to add to your SARMs mass research, get S4 Andarine for sale with us.

SelectSARMs is the best place to get SARMs. You only get the best liquid SARMs with us like our MK-2866 Ostarine, MK-677 Nutrobal, and LGD-4033 Ligandrol. If you need authentic SARMs for mass research, we got them. All our biotech SARMs are third-party tested, which guarantees that you will only get the best liquid SARMs.

Our S4 Andarine for sale is of pure-quality to fit your research needs. Our S4 Andarine is prepared in 50mg/ml tinctures stored in 30ml bottles.

If you have questions about our S4 Andarine for sale, our customer support will be more than happy to assist you.

Additional information

Weight N/A

1 Bottle (30 ml)