S23 SARM | Full Beginner’s Guide 📗 | Jan 2024

S23 SARM Guide Featured Image SARMs Facts

S23 is a SARM, short for selective androgen receptor modulator, known for shredding off body fat and increasing muscle mass, as fast as anabolic steroids, with very few side effects.

In fact, the S23 SARM has recently blown up in popularity, as people all over the world have become interested in how they can use this research chemical to build lean muscle mass.

Here's what we'll cover in today's post:

  • What is the S23 SARM?
  • How Does S23 Work?
  • Is S23 Legal to Buy?
  • Benefits of S23 SARM
  • Ideal Dosage Protocol
  • Does S23 Require PCT?
  • …and much, much more!

So, if you want a science-based guide discussing all the benefits of this compound, and explaining how to use it for insanely fast muscle gain and enhanced fat loss, then keep reading.

What is S23?

S23 SARM Molecular Structure

READ MORE: 7 Best SARMs for Bulking and Cutting in 2024

S23 is a selective androgen receptor modulator, or SARM for short. Selective androgen receptor modulators are a new class of research chemicals that are meant to mimic the effects of a normal steroid cycle, but with none of the nasty side effects (like hair loss, night sweats, etc).

In fact, due to the selective nature of S23, it binds to only the androgen receptors in skeletal muscles, which means it targets all the right muscles you want to grow, while simultaneously avoiding many of the common side effects associated with anabolic androgenic steroids.

Some of the proven benefits of the S23 SARM are:

  • Rapidly Lose Fat (Accelerated Fat Loss)
  • Strengthen Bone Tissues & Bone Mineral Density
  • Massively Increased Muscle Mass Growth
  • Stronger Than Most Other SARMs

In short, S23 is one of the strongest SARMs on the market right now, rivaled only by maybe YK-11 (Myostine), however studies show that S23 is far safer than the YK11 SARM selective androgen receptor.

Mechanism of Action

how do sarms work mechanism of action

As stated before, S23 was initially developed to mimic the effects of anabolic steroids without any of the side effects, like increased aggression, or totally shutting down your natural testosterone production.

…and while S23 still does have some side effects, thankfully due to its mechanism of action, it is able to give you insane lean muscle mass growth, with very minimal side effects.

The magic lies in its selectivity. S23 was designed to bind to exactly the right androgen receptors in your body to encourage muscle growth, without causing side effects.

Click Here to Buy S23 SARM (99.9% Pure - USA Made)

In short, thanks to our understanding of modern science and chemistry, we've designed SARMs like S23 to enter your body and exert a selective muscle building effect, so you can get all the benefits of steroids, without any of the drawbacks.

S23 Legality

So, if S23 is so strong, how is it legal? S23 is currently legal to buy and sell for research purposes, which means anyone can buy or sell it online and do so legally.

It isn't technically approved for human consumption by the FDA just yet, although it is going through clinical trials as a potential male birth control (more on this later). What's important, is that it's totally legal to buy S23 online, as well as possess it.

Just don't dose yourself in front of a cop, and you will be fine.

S23 Benefits

S23 SARM Benefits FACTS

S23 is one of the most potent SARMs when it comes to cutting. It really excels at burning fat and getting shredded, but will also yield muscle growth, along with other benefits.

Here's some of the scientifically proven benefits of S23:

  • Build Lean Muscle Mass
  • Fight Muscle Wasting While Cutting
  • Improved Bone Density & Bone Strength
  • Effective Male Birth Control
  • Accelerated Metabolic Functions (Fat Loss)
  • Massive Muscle Strength Gains
  • …and more

Now let's take a look at the human studies, animal studies, and anecdotal evidence.

It's no secret that one major benefit of SARMs like S23 is increased muscle mass. Just one cycle and you can expect around 15-25 pounds of muscle gain. In fact, one study conducted on lab rats found that S23 has a massive muscle mass building effect. [R]

Click Here to Buy S23 SARM (99.9% Pure - USA Made)

S23 has been shown to combat muscle loss while cutting, and encourage the growth of new muscle tissue even while in a caloric deficit, making it an ideal SARM for cutting.

READ MORE: 3 Best SARMs for Strength Gains in 2024

This is probably the most interesting application of this SARM. It's extremely suppressive, meaning it will lower your natural testosterone production quite a bit.

Don't worry, your natural testosterone levels will go back up after a proper post cycle therapy, but it's this side effect that's actually leading researchers to develop S23 as male birth control.

One study found that taking S23 led to a massive drop in sperm production, making S23 an effective male birth control pill when combined with Estradiol Benzoate. [R]

Dosage & Cycle Facts

What's the best S23 dosage? There's no ideal dosage for everyone, and it will vary depending on average body weight, experience level, goals, diet, and workout routine.

That being said, the S23 dosage guidelines are:

  • Beginner: 10mg/day
  • Intermediate: 15mg/day
  • Advanced: 20mg/day

The more you take, the more lean muscle mass you'll pack on, and the more body fat you'll shred, but at the same time, you will also increase your odds of encountering side effects.

Click Here to Buy S23 SARM (99.9% Pure - USA Made)

S23 is generally considered very safe by most people, but as a beginner, it's best to start off with a small dosage. Even just 10mg/day will help you with fat loss and muscle gains.

Generally speaking, testosterone shutdown on S23 is very likely, so if you want to avoid testosterone suppression, then definitely opt for a shorter cycle length.

Don't worry long term – studies have shown that even without a post cycle therapy, your testosterone production will go back to normal after ceasing S23 usage.

For your first S23 cycle, I recommend you do 10mg/day for 8 weeks.

You could even try 4 weeks if you're nervous about your testosterone shutdown.


S23 is far more suppressive than other SARMs, which means that a good PCT is absolutely necessary if you want to have high testosterone levels after cycle. Again, studies found that users' testosterone levels went to normal without a PCT, but I always use one anyways.

For SARMs PCT, I always use the same thing. You don't need Nolvadex or Clomid, that's overkill for a SARMs PCT. Just a natural supplement, with testosterone boosting ingredients, is more than enough.

I use TestoMax for my PCT. Just one bottle is enough. Start taking it on day 3 after your last SARMs dose (for them to get out of your system), and after 1 month, any testosterone deficiency from S23 will be fixed.

S23 Side Effects

While S23 has generally been proven to be safe for the most part, there are some side effects you should be aware of. More long term research is needed, but we know that in the short term it's very safe.

Here are the most common S23 side effects:

  • Loss in Sexual Motivation
  • Mild Liver Toxicity
  • Lower Sperm Production
  • Darker Urine

On higher doses, you may experience:

  • Mild Hair Loss
  • Loss in Sexual Desire
  • Erectile Dysfunction
  • Prostate Enlargement
  • Increased Aggression

Of course, as long as you take within the recommended dosage of just 10mg/day you should be totally fine. Animal studies and human studies show this is a safe dosage with very few people experiencing any side effects on it.


Chemyo SARMs Banner Ad FACTS

In short, if you want to get insane strength gains, pack on some lean muscle gains, and get that harder muscle aesthetic of looking lean and shredded, then S23 is for you.

It's one of the most powerful selective androgen receptor modulators currently being researched, and will help you shred off body fat and avoid muscle loss while cutting.

If you want to research it for yourself, we recommend you click here to get it from our #1 vendor.

Frequently Asked Questions
❓ What Does the S23 SARM Do?

The S23 selective androgen receptor modulator is used to promote incredible lean muscle gain, to facilitate fat loss in the body, promote physical endurance, accelerate fat oxidation, and more.

This androgen receptor modulator SARM will also help you build new skeletal muscle cells, lose fat, improve bone density, and rivals even testosterone replacement therapy in terms of its strength.

❓ What is S23 SARM Best For?

S23 is best for promoting incredible strength gains, building new muscle cells, rapid muscle development, and increased bone health. It is a phenomenal lean bulking SARM, but can also be used on a cut due to its ability to quickly boost fat loss.

More recently however, after successfully completing clinical trials to screen for its safety, medical professionals are considering using S23 as a potential male birth control pill.

❓ Does S23 SARM Help With Muscle Growth?

S23 will bind to androgen receptors throughout your skeletal muscles, signaling your body to start shredding off body fat and growing new muscle mass. Unlike steroids, most people only need an eight week cycle and can recover naturally without a PCT (although we still recommend one).

While the S23 SARM is certainly helpful if your goal is to gain muscle, if that is your PRIMARY goal we would recommend a better bulking SARM like RAD 140 (Testolone) or Ligandrol (LGD-4033).

❓ S23 SARM half life

This is not professional medical advice, however most bodybuilders recommend dosing S23 twice per day, due to its short half life of only 12 hours. This means that in 24 hours, the S23 SARM is completely out of your system and there are almost no traces of it in your blood.

To get stable blood levels of the S23 selective androgen receptor modulator, it is recommended you take your first dose in the morning upon waking, and your second dose in the evening before bed.

LEGAL DISCLAIMER: The information on this page is intended for entertainment and information purposes only. It is not a substitute for professional medical advice. Always check your local jurisdiction’s laws before buying anything or doing anything. SARMs are strictly for research purposes only, and are not FDA approved to treat any condition.