SARMs for Muscle Growth: The Definitive Guide

sarms guide

SARMs are a new class of performance enhancing compounds that are shaking up the fitness industry. They have the ability to promote muscle growth, fat loss, and even cardiovascular endurance. These new compounds, which are sold for “research purposes” in order to stay legal, are becoming promising alternatives to anabolic steroids. Because of this, many people are turning to SARMs to promote huge changes in body composition.

As a professional fitness coach, I decided to create this guide to help you make an educated decision on whether or not to use these sort of compounds. Below you will find an extensive list of all available SARMs, how they work, and potential side effects. A lot of my clients have used these supplements to lose fat and promote insane muscle growth safely.

I highly recommend you read this guide from start to finish. By doing so, you will acquire the knowledge needed to use SARMs to achieve your fitness goals.

July 2019 Update: SARMs are continuing to make waves in the bodybuilding and fitness industry, and more and more science is coming out backing some of their benefits. We have heard that summer of 2019 will bring some new products to the market and when they hit, we will be the first ones to report on it!

What are SARMs, and how do they work?

SARM stands for Selective Androgen Receptor Modulator. Basically, this is a fancy term for a drug that effects hormones in the body in a very specific way. This is much different than how steroids work. Take testosterone, for example. Testosterone is considered the gold standard of anabolics, and has been used by millions worldwide. While it is very good at promoting muscle growth, it can also cause terrible side effects such as gynocomastia and hair loss. This is due to the fact that testosterone converts into both estrogen and DHT in the body.

Selective Androgen Receptor Modulators are different. Instead of affecting the body as a whole, they target one specific pathway (like muscle growth or fat loss). Obviously, this is beneficial to someone who wants to pack on size or shred up without growing man boobs or losing their hair.

Where to Buy SARMs Online

The first thing you need to know about buying SARMs online is that no two companies are the same. Unfortunately, a lot of companies take advantage of this and sell either fake or extremely underdosed products. You obviously don’t want that when looking for sarms for sale.

With all that being said, let’s go ahead and start looking at my top picks for ordering sarms online. I am going to list them in order from top to bottom for who I recommend. All of the companies below are reputable. Also, I only refer people to companies that have lab test that are public record.

How to Pick Which Company You Buy SARMs From

Before I list out a list of my recommended companies, I want to explain why I favor some companies over others. Lab testing is the biggest reason. I simply can not in good conscious recommend a company that does not provide laboratory testing for their products. It’s a recipe for disaster. Companies will not get a good rating from me if they do not get their products tested. Here are some other factors that weigh into my recommendations:


If you have two companies that both offer lab testing, the next biggest deciding factor is price. Why pay more for the same compound if you don’t have to? You’ll notice that there are some huge price discrepancies with some of the sites that sell sarms. Instead of shopping around, I’m going to lay it all out side by side so you can make the right decision the first time.


Another thing that I base my reviews on is reputation of the seller. How do people talk about the company online? Are people happy with their purchase? Was shipping quick? These are all things that can be researched.

Lab Testing

I will say this one more time. If a company doesn’t provide lab tests, they do not get listed here! No ifs, ands or buts. Lab testing is the most critical deciding factor when picking where to buy sarms from.

First Pick – Proven Peptides

Our first SARMs store that we recommend is a great company called Proven Peptides. They have been in the business a long time and definitely know their stuff. Their reputation is by far the best on the internet. They have their lab tests posted on the site, so you can double check to see that the SARMs you are purchasing are real. As the ban on sarms approaches, many US based companies are going out of business and no longer taking credit cards. Proven Peptides takes credit cards and my order got here in less than a week. They offer convenient liquids that honestly don’t taste bad. Lastly, their prices are fair and affordable. This is my first choice for buying sarms online.

Click here to go to their site.

Last Choice – SARMSx

I’ll be completely honest – I love SARMSx. I really do. They have a great community, their products are legit, and they have great customer service. Unfortunately, their prices are three times higher than anyone else’s. They have made a name for themselves by basically saying that anyone who doesn’t charge as much as them have fake products. Unfortunately, it’s a little bit of a shady tactic and therefore they made it last on the list. They do have great products, that’s for sure. I just wish that they had lower prices.

Best SARMs For 2018

Below I am going to list my pick for the best sarms in 2018. I will continually update this list as the time comes. If you want to see more information on each one of these compounds, I have provided links to each one so you can do more research. Let’s take a look at the current lineup of SARMs on the market. I am going to go in detail into each one, and explain how they work.

Ostarine: Also known as MK-2866

Ostarine is one of the most popular SARMs in the fitness industry today. It was designed to prevent muscle wasting and osteoporosis. Ostarine is popular because it is extremely mild on the body and does not suppress natural testosterone levels.

In a double blind study over 12 weeks, average participants gained 3lbs of muscle and lost 1lb of fat. Keep in mind, this was with no change in diet or physical activity. Basically, those who took ostarine and did nothing else improved their physique a great deal. This is incredible when you take into consideration that the participants had no meaningful side effects.

Side Effects of Ostarine

As I stated before, Ostarine is extremely mild and does not possess any meaningful side effects. With that being said, people have reported mild suppression of testosterone in cycles exceeding 12 weeks. In my opinion, if you keep the cycle to 8 weeks or less you should be fine.

Ostarine Dosage Protocol

Most people find that between 20mg and 40mg a day is perfect. You can use ostarine on both a cutting and a bulking cycle with no issues. You can also stack this compound with other SARMs in order to reach your goals more effectively. Read more about MK-2866 here.

LGD 4033 (Ligandrol)

Are you looking to pack on muscle as fast as possible? LGD 4033 is what you’ve been waiting for. In one study, men who took LGD 4033 for 21 days had a drastic increase in lean body mass. There was also minimal suppression of natural testosterone levels. A dose of 1mg per day was used in this study.

LGD 4033 has also shown to increase sex drive, focus, and bone density. There have been no reported side effects such as prostate enlargement or hair loss.

Something to take into consideration is that LGD 4033 has not shown the ability to decrease fat. So if you want to gain muscle and lose fatty tisue, I recommend stacking it with Ostarine or Cardarine to get the best results.

LGD 4033 Side Effects

The main side effect of Ligandrol is suppression of natural testosterone. With that being said, this only happens in higher doses and is completely reversible. Most people (even those who run heavy cycles) recover completely in a few weeks.

I would suggest staying away from LGD 4033 if you already have low T.

LGD 4033 Dosing

You can see results with as little as 1mg per day. Most people like to go around 10mg per day, for a max of 8 weeks. I’ve seen clients run this SARM much higher doses but it seems that the benefits diminish past 10mg per day.

Cardarine (GW501516)

Cardarine is one of my favorite compounds currently on the market. It’s the only one in this list that actually boosts your cardiovascular performance. Quite literally, if you take cardarine, you will be able to go longer and harder in the gym. Cardarine also has the ability to burn a substantial amount of fat.

Studies show that participants doubled their muscular endurance and shed an average of 6lbs of body fat over 12 weeks. That’s insane. You will not find a more potent fat loss SARM out there.

For cutting, stack it with ostarine, and to bulk (and lose fat at the same time), stack with LGD4033.

Cardarine Side Effects – Cancer?

Shortly after Cardarine began clinical trials, cardarine was found to be carcinogenic in mice. That being said, you need to understand two things:

  • The mice were taking a human equivalent dose of 2400mg per day (most people run cardarine at 20mg a day)
  • The mice took this dose for 2 years straight (most people suggest to run cardarine in 8 week cycles)

I personally use cardarine and am confident that at low doses it does not cause cancer. As always, do your research and decide what’s right for you.

Cardarine Dose

I recommend running 20mg per day for a total of 8 weeks. I split my dose 10mg in the morning, and 10mg at night. Read more about GW-501516 here

MK-677 (Nutrobal)

MK-677 is another exciting compound that is quickly gaining popularity. It’s special because it drastically increases your growth hormone levels. As far as I know, it’s the only SARM to do this efficiently.

Bodybuilders have been using HGH to increase their growth hormone levels for decades now. Injectable growth hormone, however, has two major drawbacks:

  1. HGH is incredibly expensive. It usually costs around $2,000 a month to do a good run
  2. You have to inject HGH multiple times a day.

This is why MK-677 is so exciting. First of all, you take it orally, so no need to inject. Also, it has a very long half life, meaning that you only have to dose once per day.

Because growth hormone is such a flexible compound, you can take MK-677 for both cutting and bulking cycles. Nutrobal also promotes deep sleep, which is crucial for recovery and muscle growth.

Side effects of MK-677

The main side effect of MK-677 is water retention. Some people report “moon face” which is excess water being held in the face. You can counteract this by taking a dandelion root supplement and by lowering your sodium intake. In my opinion, getting your GH levels high is well worth the slight bloat.

MK-677 dosing protocol

Most people find that between 5mg and 20mg is the “sweet spot” for dosing MK-677. You don’t need to cycle this compound, so feel free to run it as long as you want. I have a friend who has used it for 2 years straight and his bloodwork looks great.

RAD140 (Testolone)

RAD140, also known as testolone, is another exciting SARM. It’s reported to have an anabolic ratio of an incredible 90:1. Testosterone has a ratio of 100:100. What that means is that RAD-140 is almost as anabolic, but has almost none of the androgenic effects as real testosterone. What does this equate to? Drastic muscle gain, but no hair loss or conversion to estrogen.

Side Effects of RAD-140

None have been reported. Testolone appears to be incredibly safe. No reports of prostate enlargement, elevated liver enzymes, estrogen conversion, or hair loss exist.

RAD-140 Dosing

I recommend dosing testolone between 15mg and 30mg a day. Do not exceed cycles of 12 weeks, and make sure you are getting enough water while you are taking RAD-140. This is one of my favorite SARMs, and it stacks well with cardarine and LGD4033.

YK-11: A Real Myostatin Inhibitor?

YK-11 was only recently discovered in 2011 and it has quickly gained a reputation for one of the most powerful compounds ever created. To better explain this, you need to understand what YK-11 does and why it’s so powerful. Basically, all humans have a hormone called myostatin inside them that inhibits muscle growth. There are rare cases of humans and animals that are born without this hormone, and every single one of them have the same thing in common: they’re absolutely shredded.

Ever since myostatin was found, scientists have been trying to inhibit it’s effects. Theoretically, if you could inhibit myostatin’s effects on the body, you could create the ability to gain insane amounts of muscle beyond what could be accomplished with hard work or even steroids.

Enter YK-11: potentially the world’s first real myostatin inhibitor. People who take YK-11 all share the same result: massive muscle growth in very little time.

Side Effects of YK-11

YK-11 has shown to slightly elevate liver values, so make sure to drink plenty of water. There are plenty of good liver supplements out there. You can try Milk Thistle, but I recommend TUDCA. You can buy it on Amazon and dose at around 500mg per day. Other than that, YK-11 doesn’t have any other side effects.

YK-11 Dose

For the best results, take 5mg twice per day. Frequent dosing is required due to the short half life of YK-11.

S4 (Andarine)

S4 is similar to ostarine. It’s one of the OG compounds and also one of the oldest. It’s effects are mild, and it can be ran safely for a long period of time. The biggest effect of andarine is the promotion of lean body mass. It also appears to slightly lower body fat.

Side Effects of Andarine

The biggest side effect of S4 is impairment of vision. Some users reported that after taking S4 for a long period of time, their eyesight got worse. Please note that this is reversible by simply stopping consumption of S4.

S4 (Andarine) Dosing

Most people find that 50mg per day is sufficient. I recommend that you follow a protocol of five days on, two days off.

Stenabolic (SR9009): Exercise in a Pill?

Last but not least, let’s talk about Stenabolic. When this SARM first hit the market, studies were calling it “exercise in a pill” due to it’s effects on the mitochondria. In a study on mice, it was found that those given stenbolic were able to run 50% longer than those that were not treated with the compound. Another finding of the study was that the mice treated with stenabolic lost 60% more fat than those without it. There was no change in diet or exercise during this study.

Side Effects of SR9009

Stenabolic is not a hormonal SARM, meaning that it does not effect hormones in your body. Stenabolic should be relatively safe if used correctly.

How to Dose Stenabolic

SR9009 has a halflife of 2.5 hours, so you’ll have to dose three to four times a day. Most people prefer a dose of 20mg to 30mg per day.

Are SARMs Legal or Illegal?

You can legally own SARMs in all 50 states. Websites will sell them as “research compounds” and label them not for human consumption in order to get around the FDA’s ban on hormonal compounds. The USADA bans all tested athletes from using SARMs. If you are a tested athlete, either stay away from these compounds or cover your tracks.

Best SARMs Stack

The best SARMs stack depends on your goals. I will give you three good choices for bulking, cutting, and recomping.

Bulking Stack

MK-677: 25mg a day for 6 weeks.

LGD 4033: 10mg a day for the first 6 weeks.

Ostarine: 25mg a day starting at week 2 and on.

YK-11 (Optional): 5mg a day for 6 weeks

For a much more in depth guide, check out my sarms bulking stack here.

Cutting Cycle

MK-677: 10mg a day for 10 weeks.

Ostarine: 25mg a day starting at week 4 and on.

Cardarine: 20mg a day for 10 weeks.

Recomp Cycle

MK-677: 25mg a day for 10 weeks.

Cardarine: 20mg a day for 10 weeks.

LGD 4033: 10mg a day for the first 6 weeks.

SR9009: 30mg a day for 10 weeks.

Are SARMs Safe to use?

Most people agree that SARMs are extremely safe when used correctly. Obviously you’re going to want to do your own research, which is part of why I created this site. As with most things, moderation is key. Give your body ample time in between cycles in order to recover and you will be okay.

Commonly Asked Questions

Now that you’ve decided where you will buy SARMs from, let’s jump into some commonly asked questions. If you have further questions, just post them in the comments section below and I will get back to you within a few minutes. Also, be sure to do plenty of research on this site before deciding what sarm to buy.

Is it illegal to buy SARMs online?

No it is not.  It would be illegal to sell them for human consumption. That’s why you see companies selling SARMs online as research chemicals. This is sort of a legal loophole that let’s you buy sarms without breaking the law. Update: Congress just put in a bill that will ban sarms. It is unknown when the bill will be signed into law. Read more about the ban here.

Can I buy SARMs if I live in Austrailia?

Yes, you can! Most companies ship worldwide. I recommend to check with local laws before purchasing.

What about the UK?

Same as above. Most retailers will send you SARMs wherever you live. It is your responsibility to make sure that you are not importing illegal goods.

How do I know which SARM to buy?

I recommend reading our main page at There you will find all the info you need. We spent a lot of time researching and developing 101Sarms to make it the best place to research SARMs online. Also, if you have any questions about SARMs, just let us know in the comment section below.

Final Words

I hope you find this site to be exactly what you are looking for. I will constantly be updating the sidebar with more news and information about SARMs as they come out. If you’d like to, leave a comment below and share your experience with whatever compounds you have tried so far. Best of luck to you and I hope you can achieve your fitness goals.