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Shanghai Yijing Industrial Co., Ltd.

S-23, S-23 Usage, S-23 Effect manufacturer / supplier in China, offering Oral Sarm S-23 for Bodybuilding, Hot Sell Apis Melatonine Melotonin 73-31-4, 100% Factory Direct Supply 99.5% Assay Hydroxyprogesterone Acetate 302-23-8 and so on.

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Supplier Homepage Product Sarms Oral Sarm S-23 for Bodybuilding

Oral Sarm S-23 for Bodybuilding

Purchase Qty.:
10-19 20-29 30+
FOB Unit Price: US $30 US $60 US $90
Purchase Qty. (g) FOB Unit Price
10-19 US $30
20-29 US $60
30+ US $90
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Port: Shanghai, China
Production Capacity: 500kg/Week
Payment Terms: T/T, Western Union, Money Gram, Bitcoin

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Basic Info
  • Model NO.: S-23
  • Customized: Customized
  • Suitable for: Elderly, Adult
  • Purity: 99.66%
  • Delievery Time: 3-5 Workdays
  • Transport Package: 1kg/Foil Bag or as You Inquired
  • Origin: Shanghai
  • Powder: Yes
  • Certification: ISO 9001, USP, BP
  • State: Solid
  • Ship Methods: EMS, DHL, TNT, FedEx, UPS, Aramex
  • Trademark: YJ-Pharm
  • Specification: 1kg/foil bag
  • HS Code: 3001
Product Description
We have all heard of selective androgen receptor modulators (SARMS), so we know that they are a great legal and safe alternative to steroids. These days, the most commonly used SARMs are Ostabolic (Ostarine), Andarine (S-4), and Anabolicum (LGD). But have you heard of S-23? In this article we will examine this SARM by looking at its uses in bodybuilding, and other more surprising applications.

Bodybuilding Uses:

Developed by GTx, S-23 is an orally active nonsteroidal SARM with a very high binding affinity to androgen receptors. This makes it stronger than other popular SARMS like Ostabolic (mk-2866) or Andarine (S-4). Therefore, the main effects of S-23 are increased muscle mass, decreased fat mass, and a decrease in the size of the prostate.
Additionally, in a study done on rats a dose equivalent to 15 milligrams (mg) for a 180lb male was shown to also increase bone mineral density, as well as promote muscle mass growth and fat loss. Hence, S-23 is versatile in that it can be used for bulking and for cutting.

Alternative Uses:

A 2009 study performed on rats showed potential for S-23 to be used as a male contraceptive. In this study, six rats were given a dose of 0.1 mg per day for 10 weeks. As a result, both LH (Luteinizing Hormone) and FSH (Follicle-Stimulating Hormone) levels decreased. These effects were statistically significant, since four of the six rats had no sperm in the testis. What's more, none of the rats was able to impregnate a female rat during mating trials. However, this contraceptive effect was temporary - after just 100 days from last dose the infertility was reversed, and there was a 100% pregnancy rate.

Side Effects:

The main side effect of S-23 use is the suppression of natural testosterone production. This is what gives it potential as a male contraceptive, and also makes it very different from other SARMS. While ostarine (ostabolic), andarine (s4), and Anabolicum (LGD) may cause a mild shut down, S-23 is extremely suppressive. Consequently, this will be a major factor in deciding whether to use this SARM or opt for the more widespread choices. Unfortunately, there have not been any human studies, so not much is known on other potential side effects.

Dosages and Cycles:

Dosages of S-23 can vary, and they will be very dependent on what the goal is. For instance, if a user were looking for muscle building and fat loss, a dose of 15-25 mgs per day would be appropriate. On the other hand, if someone was looking to use it for the contraceptive effects, a higher dose of around 50 mgs per day would be more effective. Nonetheless, this is not recommended because there have not been studies done on humans to replicate the contraceptive effect shown in rats.


S23 can be taken orally, but in this experiment the researchers gave male rats daily injections of S23 for 14 days. The doses varied from 0.01 to 1 mg S23 a day. The human equivalent of these doses - for an adult male weighing 80 kg - would be somewhere between 0.5 mg and 50 mg.
The figure below shows that a dose of 0.3 mg S23 [human equivalent: 15 mg] leads to an increase in muscle mass, but that the prostate dimensions decreased.

In spite of the fact that after 100 days the rats did recover natural testosterone levels, humans would need to run a full PCT (Post Cycle Therapy). Since S-23 causes severe suppression, I would always recommend the Perfect PCT.


S-23 has many potential benefits that range from muscle building and fat loss, to being a possible male contraceptive. Even though this SARM may seem very intriguing, it is still in a very early stage of development and study. Thus, I would proceed with caution when considering this compound. Keep in mind that there are other SARMS on the market today, such as ostabolic and testolone, which give similar muscle building and fat loss effects and are much more studied. Besides, other SARMS will also cause much less suppression of natural testosterone production, allowing the user to run a considerably milder and shorter PCT. All in all, I would recommend sticking to the tried and true until more research is done on S-23. In simple terms, stay away from this SARM until we know more.

Related products:
MK-2866(Ostarine)/GTx-024/10-20mg per day
MK677(Ibutamoren)/20mg per day
YK11/10mg per day
GW501516(Cardarine)/20-30mg per day
S4(Andarine, S-40503,GTx-007)
RAD-140/Testolone/ 10-20mg every second day
SR9009/Stenabolic/10-30mg per day

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