Xi'an Sonwu Biotech Co., Ltd. is one of the most professional manufacturers and suppliers of s23 capsule in China. We warmly welcome yuo to wholesale bulk s23 capsule for sale here from our factory. Quality products and reasonable price are available.
S23 SARM Strength
S23 capsule is made from 99% pure S23 powder. S 23 is an experimental nonsteroidal selective androgen receptor modulator (SARM) designed to study its use in muscle building, fat loss and potential male contraception. Its chemical name is (2S)-1-(4-cyano-3-trifluoromethylphenyl)-2-(1-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-3-yl)ethan-1-ol, CAS number is 1010396-29-8, and molecular weight is 416.75 g/mol. S 23 mimics the effects of testosterone in tissues such as muscle and bone by selectively activating androgen receptors, but has less effect in organs such as the prostate. Animal experiments have shown that it can effectively promote muscle growth and bone density while inhibiting testosterone production, so it has the potential for research on reversible contraceptive effects. Compared with other SARMs, such as LGD-4033 or RAD-140, S 23 has stronger binding ability and exhibits more obvious hormone inhibition effects. If you need S23, Xi'an Sonwu can supply it. Xi'an Sonwu is looking forward to hearing from you.

HPLC Of S23

S23 SARM For Sale
Xi'an Sonwu Biotech Co., Ltd. has rich experience in global trade and the health industry. Insisting on faith-based and quality-first principles is our company's guiding principle. We strictly control product quality, which means our selection process begins with raw materials. Additionally, we handle every detail and minimize costs to the maximum, allowing our customers to obtain cost-effective products. Based on this, customers have provided a lot of positive feedback about our products. So look for Xi'an Sonwu Biotech Co., Ltd. when buying S23.
Xi'an Sonwu ensures product quality and can provide samples upon request. Here is the quantity.
|
S23 Form |
Sample Amount |
MOQ |
|
Powder |
10g |
10g |
|
Bulk Capsules |
1000 capsules |
1000 capsules |
|
Bottle Capsules |
5 bottles |
5 bottles |
Customers' Good Comment

OEM Service
Xi'an Sonwu can supply high-quality S23 capsule, its powder, and liquid.
Customers can customise the capsules they want. The items below can be supplied.
Customised capsule shells (size, colour, material)
Customized bottles(size, color, material, style)
Customized packaging(vacuum foil packaging, box, drum)
Customized label(paint film, matte film, optical mask)

What Does The S-23 Do
S-23 is an experimental Selective Androgen Receptor Modulator (SARM) that binds to androgen receptors in muscle and bone tissue with high affinity to find alternatives to anabolic steroids - compounds that build muscle and strength with fewer side effects.
What S-23 Does (Key Effects)
1. Increases Lean Muscle Mass
S-23 helps stimulate muscle growth by binding to androgen receptors in skeletal muscle. It promotes protein synthesis, making it attractive to athletes and bodybuilders. In animal studies, S-23 increased muscle tissue while decreasing fat mass.
2. Promotes Fat Loss
Like other SARMs, S-23 improves muscle-to-fat ratio, which may support body recomposition (more muscle, less fat).

3. Suppresses Natural Testosterone
S-23 strongly suppresses endogenous testosterone production - more so than many other SARMs. This is because it strongly binds to androgen receptors and tells the body it doesn't need to produce more testosterone. Recovery of natural testosterone may require post-cycle therapy (PCT).
4. Potential Male Contraceptive
In animal models, S-23 has shown reversible suppression of spermatogenesis (sperm production), making it a candidate for male birth control research.
How Long Does S-23 Stay In Your System
S-23 has a half-life of approximately 12–24 hours, meaning it stays in your system for several days after the last dose, depending on your metabolism, dose, and duration of use.
How Long Does S-23 Stay in Your System?
|
Factor |
Estimate |
|
Half-life |
~12–24 hours (most common estimate: ~20 hours) |
|
Time to clear from body |
~5–7 days after last dose (in most users) |
|
Detectable in blood/urine |
Varies, possibly 1–2 weeks depending on sensitivity of test |

What Affects Clearance Time?
Dose & Duration of Use
Higher doses and longer cycles may mean longer clearance.
Liver & Kidney Function
Since S-23 is metabolized in the liver, impaired function may slow clearance.
Body Fat & Storage
S-23 is somewhat lipophilic (fat-soluble), so it may linger longer in individuals with higher body fat.
Supplement Stack
If taken with other compounds, drug interactions may delay or speed up metabolism.
Detection in Drug Tests
S-23 is banned by WADA (World Anti-Doping Agency) and is on most sports anti-doping lists. It can be detected in blood or urine using LC-MS/MS (mass spectrometry) tests. Detection windows can range from a few days to two weeks, depending on testing methods.
S23 And RAD 140 Stack
S23 + RAD-140 is a popular but very advanced and suppressive SARM stack used primarily by experienced users seeking maximum lean muscle gains, strength, and fat loss. However, it comes with significant hormonal suppression risks, and post-cycle therapy (PCT) is absolutely necessary.
Why Stack S 23 with RAD-140?

|
Compound |
Primary Benefit |
Suppression |
|
RAD-140 (Testolone) |
Muscle growth, strength, slight neuroprotection |
Moderate |
|
S 23 |
Hardening, fat loss, dry gains, high potency |
Severe |
Together, they offer:
Dry, lean muscle gains
Increased strength and vascularity
Decreased body fat
Possibly no water retention
Typical Cycle Example (Not a recommendation)
|
Week |
RAD-140 |
S 23 |
|
1–8 |
10–20 mg/day |
5–10 mg/day |
|
9–12 |
Off-cycle + PCT |
Off-cycle + PCT |
Cycle length: 6–8 weeks max
PCT recommended: Clomid 50/25/25/25 mg or Nolvadex 40/20/20/20 mg
Side Effects to Expect
Heavy testosterone suppression
Possible mood swings, aggression
Testicular shrinkage
Acne, libido fluctuation
Night sweats or hot flashes (especially from S 23)
S 23 in particular can cause near-complete shutdown of natural testosterone, even at low doses.
Is It Worth It?

|
Pros |
Cons |
|
Dramatic gains in size and strength |
Severe hormonal shutdown |
|
Rapid fat loss and vascularity |
Risk of long-term HPTA suppression |
|
No aromatization (no estrogen conversion) |
Requires careful PCT & bloodwork |
|
Short half-lives (easy to adjust) |
No long-term human safety data |
Stacking S 23 + RAD-140 is a powerful but high-risk cycle. It should only be considered by experienced users who:
Understand SARMs and endocrine suppression
Have PCT on hand and a plan in place
Regularly monitor bloodwork
Are not competing in drug-tested sports (both are banned by WADA)
Can You Take S-23 By Itself
Technically, yes - you can take S-23 by itself, but it is not recommended unless you're fully aware of the risks, and even then, it should only be done under medical or research supervision.
Why Taking S-23 Alone Can Be Risky

1. Strong Testosterone Suppression
S-23 is one of the most suppressive SARMs - it significantly reduces your body's natural testosterone production, even at low doses.
Symptoms of suppression may include:
Fatigue
Low libido
Mood swings
Testicular shrinkage
Depression
Without Post Cycle Therapy (PCT), your hormones may take a long time to recover, or may not recover fully.
2. No Human Studies = Unknown Risks
There are no human clinical trials for S-23.
All data comes from animal studies or anecdotal user reports.
Long-term side effects are completely unknown.
3. Potential Need for PCT
If you take S-23 by itself, you'll likely need PCT afterward (e.g., Clomid or Nolvadex) to help restart natural testosterone production.
Why Some People Stack It
Users often stack S-23 with milder SARMs (like MK-677 or RAD-140) or testosterone to reduce suppression symptoms.
Others pre-load PCT drugs to prepare for shutdown.
Factory
1. Xi'an Sonwu has a factory with sufficient stock. In addition, Xi'an Sonwu has a clean and tidy production department with advanced equipment. Under the company's leadership, researchers continue to develop new products to meet customers' needs.
2. Xi'an Sonwu has advanced testing equipment and professional testing personnel, all of which show that Xi'an Sonwu aims to provide accurate and effective data and good service.

Certificate

Packing

Logistics Update

In addition to guaranteeing product quality, the other most vital thing is that clients receive the goods smoothly. So, Xi'an Sonwu supplies all kinds of couriers according to different needs.

FAQ
1. How to inquire?
We can be reached by phone, email, or social media.
2. How do you guarantee the quality of products?
Each batch must be tested, and a COA can be supplied to customers. Additionally, all the products pass the test: HPLC, UV, GC, TLC, etc. We also cooperate with third parties, such as SGS.
3. How do you pack and store?
Pack: Use sealed export-grade drums and vacuum-sealed foil packaging, or pack the goods according to customers' needs.
Storage: Store it in a dry, cool place, away from sunlight.
If you want to know about the S23 capsule, you can contact Xi'an Sonwu. Click the email, and then you get high-quality S23 powder.
Email: sales@sonwu.com
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