What are SARM supplements

SARMs Guide A-Z

In recent years, the SARMs have grown in popularity. Most athletes have come across this name somewhere in their careers, but a sizeable fraction of them do not know what they are or what they are used for. In this article, we are going to try to answer all the important questions related to them and answer frequently asked questions.

What are SARMs?

The word SARM stands for Selective Androgen Receptor Modulator. They are substances intended to treat diseases such as muscle wasting and obesity, but their high anabolic potential with minimal side effects led to a sudden surge in popularity among athletes. After use, these compounds selectively bind to androgenic receptors in muscles and bones and produce an effect similar to that of anabolic steroids, but without directly affecting the endocrine system. It is also worth noting that, unlike oral steroids or prohormones, SARMs are not hepatotoxic.

Types of SARMs

  • LGD-4033 (Ligandrol): This is the most popular SARM used to build lean muscle mass. It is a multipurpose substance that allows you to gain significant amount of muscle mass in a short period of time, which makes it ideal for building muscle mass. In addition, its high anabolic potential also makes it suitable for cutting, which allows you to maintain most of the muscle mass during times of calorie deficit.
    We recommend taking 5-10 mg for 6-8 weeks.
  • RAD-140 (Testolone) is a SARM with the highest anabolic potential. It is called Testolone because its effects are very similar to testosterone in all aspects. During one cycle, the RAD-140 can even build a few kilograms of good quality mass. It also offers the greatest increase in strength of any substance of this type. However, long cycles can lead to testosterone suppression (PCT is not required as it has little impact on the HPTA system, but is recommended for improved wellness and muscle growth).
    We recommend taking 10-15mg for 6-8 weeks.
  • MK-2866 (Ostarine)is the most common substance used in weight loss. It preserves most of the muscle mass despite a chronic calorie deficit. It is a relatively mild product that is often combined with other SARMs, which shows synergistic effects.
    We recommend taking 30 mg for the entire duration of the reduction.
  • MK-677 (Ibutamoren; Nutrabol): This substance does not theoretically belong to the SARM group, but is very often considered to be one of them. It increases the secretion of growth hormone and thus has a significant influence on the health of the skin, nails and joints. It is used in combination with other substances to build muscle mass or separately to regenerate joints after the season.
    We recommend taking 25 mg for 8-16 weeks.
  • GW-501516 (Cardarine): This is another substance that is often mistakenly classified as SARM. It increases endurance and significantly speeds up the metabolism. It has a positive effect on the cardiovascular system, the liver, the kidneys and protects the brain from a lack of oxygen. Excellent for all competitive sports and for cutting.
    We recommend taking 10-20mg for 8-12 weeks.
  • SR-9009 (Stenabolic) is a substance with effects very similar to GW-501516. It also increases stamina and speeds up the loss of adipose tissue.
    We recommend taking 10-40 mg in 3-4 servings for 8-16 weeks.
  • YK11: The effects of this substance are often very similar to RAD-140. YK11 is known for its ability to increase follistatin production (myostatin inhibitor) - a protein that promotes muscle growth and increases the natural muscle mass limit.
    We recommend taking 10-15 mg for 4-8 weeks.
  • S23: One of the strongest SARMs currently available on the market. It has a universal application - it supports both muscle mass development and fat loss. In addition, it increases bone density and female libido. S23 is often combined with LGD-4033 and MK-677.
    We recommend taking 20-30 mg for 8-12 weeks. It is recommended to divide the daily dose into two servings due to the short half-life.
  • S4 (Andarine): Strong SARM to build lean muscle mass. It has a very similar effect to the RAD-140 and LGD-4033. It enables a relatively large amount of muscle mass to be built up in a short period of time.
    We recommend taking 25-50 mg for 6-8 weeks.

Before and after

Best SARM combination for building muscle mass

RAD-14010mgweek 1-8
MK-67730mgweek 1-8
S2310mgweek 1-8

I believe this is the best combination currently available for building muscle mass. It is perfect as a first cycle for beginners. From this combination we can expect 6-8 kg of high quality mass. If you have a little extra money, you can also add YK11 or Ostarin, which have synergistic effects with the substances mentioned.

A cheaper, but also an effective option:

LGD-403310mgweek 1-6
RAD-14010mgweek 1-6

In that case, it would be a good idea to add Ostarin if the budget allows.

Best SARM Combo for Weight Loss

Over the course of my career I have used a lot of SARMs for reduction. The following combination is by far the best I've ever tested.

MK-286620mgweek 1-10
GW-50151610mgweek 1-10
LGD-403310mgweek 4-10

SARMs vs steroids

The effectiveness of steroids is of course significantly higher. However, SARMs have several benefits that can make it worth trying before starting your first steroid cycle.

First, they are safer for health (especially when compared to oral steroids) - they do not significantly affect the HPTA system; they do not damage the liver, stomach, or cause acne, gynecomastia, hair loss, aggression, or increased water retention. (Of course, not all steroids have the above side effects, and most of them can be avoided with a sensible cycle).

Second, they are easier to use - swallowing a tablet / few mg of powder instead of the injections that most beginners fear.

And finally, you can buy them legally. Of course, there is no penalty for owning steroids, but the restriction itself creates problems in accessing them.

Side effects

The side effects of SARMs are negligible compared to steroids or prohormones and depend on the substance used.

Long cycles (> 6 weeks) of RAD-140 and LGD-4033 can lead to testosterone suppression. However, it is not reduced to zero, as is the case with steroids, but its concentration decreases by 30-60% depending on the substances used, the amount and the length of the cycle. However, it is important to remember that good quality SARMs have very limited effect on the HPTA system, so PCT is not required for short cycles. In the case of longer or stacked cycles, post cycle therapy is recommended to get more muscle gains and improve mood, which may decrease in the final weeks of the cycle. Another fairly common problem is increased blood pressure. It's usually not a significant change, but it's important for people with high blood pressure to keep this in mind.

Where can you buy SARMs online?

Unfortunately, most of the SARMs on the American market have little in common with their names. Most of the recently tested products contained only a negligible amount of the declared substance. It is also common among manufacturers to add prohormones and steroids. For this reason, you should only buy SARMs from reliable suppliers - they should preferably have a Certificate of Analysis (CoA) issued by an outside laboratory for every batch sold.

Stores we recommend:

Proven Peptides

One of the most trusted stores that is currently the most popular in the world. I can only speak in superlatives about the business and the quality of their SARMs. Perhaps the only downside is the fact that Proven Peptides only offers SARMs in liquid form. Of course, this in no way affects the absorption of the substance. Each bottle is supplied with a pipette and information about the amount of substance that corresponds to 1 ml of liquid. For each batch of product, they have a certificate of analysis from an external laboratory.

They are one of the few who offer telephone contact, which means that you can get answers to all your questions within minutes.

Proven Peptide also offers a “Peptide Points” loyalty program, in which the points collected reduce the cost of future orders.

Link to their website


Relatively young business. It is rapidly gaining popularity, especially on Reddit. This is mainly due to the attractive price of the SARMs compared to the competition and the high level of transparency. Certificates of Analysis for each product can be downloaded directly from their website. As with the tried and tested peptides, they only offer SARMs in the form of solutions. Unfortunately, the bottles don't come with a dropper (they offer 1ml syringes for $ 1).

Link to their website


Less popular than the previous provider, but offers SARMs of just as good quality. In contrast to its predecessors, it offers SARMs in the form of capsules and injections. They offer a certificate of analysis issued by an external laboratory for each product. In addition to SARMs, the range also includes PCTs, aromatase inhibitors, drugs for erectile dysfunction, nootropics and peptides.

Link to their website


Although it has long been our favorite store, we are unfortunately forced to withdraw our recommendation. In recent months, contact with them has become difficult, deliveries are delayed by up to 3 weeks, and the quality of the products has deteriorated significantly.
I apologize to all of the people who based on my recommendation decided to buy from this store before they updated the review.

frequently asked Questions

How do SARMs work?

SARMs work similarly to anabolic steroids - they also bind to androgen receptors, but unlike steroids, they only activate receptors in muscles and bones. Because of this, they do not have the characteristic side effects of anabolic steroids.

How long should a SARM cycle be?

The length of the cycle depends on the substances used. With anabolic SARMs, 6-8 week cycles seem to be the most common. Products that protect / regenerate the joints are typically used for 12-20 weeks.

How much time is there between the SARM cycles?

Depending on the length of the cycle and the substances taken, the interval between cycles should be 4-8 weeks. The break should not be shorter than half the cycle length. If there is no post-cycle therapy, it is advisable to at least wait until cycle length is reached.

Of course, these recommendations only apply to substances that can cause testosterone suppression (RAD-140, S-23, YK-11, LGD-4033 over a long cycle). No PCT is required for all other SARMs.

Do you need PCT?

SARMs don't cause the HPTA system to malfunction, so they don't require post-cycle therapy - testosterone should return to normal within about two weeks. However, due to the high level of testosterone suppression even during longer cycles of RAD-140, LGD-4033, S-23, YK-11, or a combination of these, it is recommended that PCT be performed to gain more muscle. It's a good idea to start PCT two weeks before the end of your cycle - this will keep you from feeling uncomfortable.

Sometimes one comes across opinions suggesting that SARMs can cause a blockage - this is a consequence of the fact that a large number of SARMs on the market are prohormones packed in a box with a changed name. Therefore, remember to only buy SARMs from reliable sources!

what is the best sarm for bulking

The best SARMs for bulking are LGD-4033 and RAD-140. To maximize gains, you can combine both substances and add Ostarine / MK-677. When using the whole stack, you can expect a weight gain of about 6-8kg (people who are far from their physiological maximum).

What is the Best SARM for Fat Loss?

When it comes to weight loss, we use substances that help maintain muscles when there is a lack of calories. Ostarin and GW-501516 are best suited for this.

What is the best SARM for strength?

RAD-140 is the best substance for this purpose. A significant increase in strength is observed after about 3 weeks of use.

Can SARMs Cause Acne?

Many people are afraid of steroids because they are afraid of balding / gynecomastia / acne. SARMs typically do not cause any of the above symptoms due to their selective action. Some of them, like MK-677 or Ostarin, can even improve the appearance of the skin (of course, they don't treat acne) by increasing the secretion of growth hormone, which affects collagen synthesis.

In some cases, cycles of LGD-4033 and RAD-140 that are too long can make acne worse in people with naturally very high estradiol levels.

Personally, despite the high predisposition to acne, I have never noticed that SARMs aggravate it in any way.

Can SARMs cause hair loss?

No. None of the SARMs cause baldness. In theory, the MK-677 can even help fight baldness as it increases growth hormone secretion, which speeds hair growth and improves its condition. In rare cases, growth hormone (and, to a lesser extent, MK-677) can cause hair regrowth in areas of hair loss - but this is usually seen in people who have lost their hair for reasons other than male baldness.

Are SARMs Legal?

SARMs are legal in most countries in the world (including Germany). However, they are banned by the World Anti-Doping Agency (WADA).