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My Recommended Source to Buy SARMs

If you’re in a rush and just want to know the best place to buy SARMs online, go here: Science.bio

At checkout, you can use the Science.bio discount code “DC10” to save 10% on your entire order.

If you’re willing to learn exactly why I recommend you buy SARMs from this company as opposed to the hundreds of other SARMs companies, then read on.

The Quality Of SARMs On The Market Vary Wildly

The quality of SARMs (official name Selective Androgen Receptor Modulators) varies enormously between different sellers and there’s a massive difference between good and bad SARMs.

GOOD SARMs will produce repeatable results that are truly selective for anabolic effects in muscle or bone tissues without producing any androgenic effects in tissues such as the prostate gland (at therapeutic dosages).

BAD SARMs, on the other hand, will generally offer nothing (because they are underdosed or completely bunk), or may even be tainted with liver toxic methylated Prohormones (which are now illegal).

Of course there are a lot of SARMs companies out there that sit in between these two extremes and would be considered just mediocre or average, but don’t mistake that for legitimate, high quality SARMs.

If you are researching with compounds like SARMs that suppress endocrine function and can have varying levels of health implications, then it pays to get the best SARMs you can to ensure you can predict with far greater accuracy exactly what to expect, and how to tackle any potential side effects or obstacles that may occur during experimentation.

This is why Science.bio is my recommended SARMs company, as it has what I believe to be the most superior SARMs for sale online for research purposes.

And by superior I quite literally mean that they just straight up dose their products accurately, and they are not tainted with a myriad of other mystery compounds.

What more can you ask from a SARMs company than that?

Unfortunately in this industry, that's easier said than done.

There are hundreds of SARMs suppliers out there and I’ve tried a lot of them over the years (I've personally been researching SARMs for nearly half a decade).

From the type you buy in mom and pop supplement stores with overly-hyped up aggressive packaging (really not how SARMs should be marketed as they aren't dietary supplements), to the companies that swear their liquid SARMs are stronger than all capsule SARMs (total myth by the way), to the seemingly good suppliers that have been around for years.

The SARMs quality varied so significantly between all of these companies, it wasn’t even funny.

SARMs are not something you can purchase from just any old store and expect to produce the same results (unfortunately).

These are sensitive compounds we’re talking about and the way they are sourced, handled, packaged, screened via third party testing, how old they are, among many other variables, will all impact whether the end product is top tier in quality or not.

As I touched on, I have experimented with many other SARMs companies in the past.

Some produced reasonable results, and some minimal/none at all.

However, there are a handful of elite SARMs companies out there providing accurately dosed products consistently, and Science.bio is at the top of that elite handful.

If you wish to buy SARMs from elsewhere, go ahead, but don’t pass judgement until you have personal experience with this source.

Why I Think Science.bio is the Best Place to Buy SARMs Online

  • They are ACTUALLY third party tested. There are SO many companies out there that claim they are third party tested, have HPLC results showing that their products are 99% pure, blah blah blah, but then when you ask to see their third party tests, they either don't have anything to show you, or they show you a Certificate of Analysis (COA) from their raws dealer in China. A COA, is NOT the same thing as third party testing. A COA is a document that the Chinese supplier can doctor however they want, and likely doesn't even show true results, as most of these companies (literally 99% of companies) are NOT paying an unbiased third party lab to test their products for them. The only way you can know for certain what you are getting is legitimate is by literally paying thousands of dollars out of your own pocket to send your products to a third party lab, and have them perform a completely unbiased test on your products, and then send you those results. COA's mean nothing.
  • Science.bio' raw ingredients are throughly FTIR/HPLC/GC-MS/LC-MS tested not only in-house, but as well a second time at another domestic lab to ensure that everything is as close to 100% purity as possible prior to putting anything up for sale. Their products are also thoroughly tested by Nuclear Magnetic Resonance Spectroscopy (NMR). They repeat this process for every single batch of product they manufacture, not just one random batch a year ago that they had tested just so they could show results on their website as a marketing ploy (what most companies do, if they even third party test at all).
  • They ensure minimum moisture content to maximize shelf life.
  • Same day shipping and the prices are great.
  • You won't need to account for a huge margin of error like with other SARMs companies. Science.bio SARMs are just more potent than any other company that I've had experience with and that’s what I base my recommendations on. They are accurately dosed, consistently accurately dosed, and this holds true across their entire product lineup, and is not just exclusive to 1 or 2 products that they hit the nail on the head with. To get the same effects with SARMs from elsewhere you may need to use as much as double the dose of Science.bio, if not multiple times that, simply because very few companies are getting real SARMs from their suppliers. This is why third party testing is so important, as most companies literally don't have a clue what's in the products that they are selling you.
  • Science.bio's customer service is excellent. I’d be hesitant to recommend a source if their service and support wasn’t top notch, no matter how good their product is. Science.bio offers prompt and friendly support, should you need it, so you’ll be in great hands. Their website makes it easy to buy SARMs online too.
  • The SARMs themselves from Science.bio are simply the best and most reliable I have used in my own personal research. If I end up finding a better SARMs company in the future I will revise my recommendation, but as it stands, I rate Science.bio as the highest quality SARMs company I’ve found in terms of how consistently on point their entire product lineup is.

My Supplier Requirement Checklist

Over the years I have developed some specific criteria that I feel a SARMs company should meet if I am to give them my business.

This is based on my past experiences with good and bad companies.

In terms of SARMs quality, I believe the more a company meets these criteria, the higher quality the SARMs are likely to be.

My requirements are as follows:

Third Party Testing

I don’t recommend buying SARMs from a company that doesn't pay for third party testing. Period.

As mentioned already, third party testing is what is going to separate the men from the boys when it comes to SARMs companies.

Simply put, I am not going to compromise my research by risking it with some random company that has nothing that can prove their purity, or consistency of purity.

I need concrete proof that a company's products are accurately dosed, and that they have the most stringent quality control procedures in the industry.


There are a lot of research chemical companies nowadays, and one thing I find crazy is how many sell blatantly illegal substances.

Personally, I think all drugs should be legal, but the fact remains that they aren't, so there are some key things I look for when I am assessing a SARMs company's legal compliance and risk profile.

If a company sells SARMs, but then they also sell a myriad of Rx only/scheduled compounds, it is a bit sketchy and it is likely not a company I want to be trusting my money with when there is an impending ban on SARMs.

To be frank, from a legal standpoint, SARMs have yet to be scheduled (in my country at least, you should double check where you live if they are legal before you buy SARMs from anyone), so if there is a company that is commingling their legal products with illegal products and selling everything they can get away with, it's probably not a good sign for their longevity, and likely not a good sign for their quality control procedures.

No Hyped Up Marketing

I don’t recommend buying from companies that go out of their way to market SARMs as legal steroids with no side effects for extreme bodybuilding purposes, or as dietary supplements in general.

The more a company markets SARMs as hardcore bodybuilding compounds with aggressively hyped up expectations, the worse the SARMs usually are.

Not only is the product usually of lower quality with these companies, this sort of behavior is also what gives people the wrong idea about SARMs and only increases the chances of them being made illegal (which is probably inevitable at this point already).

To be clear, these are not dietary supplements, so if a company is labeling them that way, they've already blown it in my books, and the aggressive marketing is just icing on the cake.

Don’t be seduced by this aggressive, misguided marketing, and don’t support it.

The Different SARMs for Sale

As you should know, different SARMs possess different properties than one another, despite all operating via a very similar mechanism of action.

They are all intended to be non-steroidal and exert tissue-selective anabolic effects in muscle and bone, while sparing other androgenic effects that come from anabolic androgenic steroids (AAS).

To make things easier for you, I’ve made a table to show you each of the most well known and researched SARMs, and broken them up into varying levels of endocrine suppression, as well as separated the compounds that are not SARMs at all, but are commonly lumped into the SARM category.

The ones that are less suppressive seem to be the most promising in research for their intended purposes.

You can also see my SARMs reviews and personal opinions of each below:

Mildly Suppressive SARMs:

Ostarine (MK-2866)

Ostarine is the most well known SARM, and it is also the most research backed. This selective androgen receptor modulator (SARM) has been studied and proven to improve lean body mass and physical function. It also increases tendon strength, ligament health, bone density and encourages collagen turn-over. It is one of the least suppressive and minimally androgenic, making it a prime candidate for therapeutic purposes moving forward, and assisting in muscle retention/growth without the ramifications of severe androgen related side effects. Reports of 5-10 pounds of lean muscle gain from Ostarine are quite common.

S4 (Andarine)

S4 is another orally bioavailable SARM that can result in substantial increases of strength, lean muscle mass, and fat loss. It is non-steroidal and has tissue-selective anabolic effects in muscle and bone, while sparing other androgenic effects that come from anabolic androgenic steroids (AAS). S4 doesn’t bloat as it doesn’t convert to estrogen or progesterone, and the size it produces is very dry. It is the only SARM aside from S23 that can mimic the dry, grainy, hardening effects formidable to that of pure DHT, without exerting any of the negative side effects associated with DHT like hair loss, prostate growth, acne, virilization in women, etc. Night vision issues are commonly reported as a side effect from users, which appears to correct itself shortly after the discontinuation of Andarine administration. S4 has a tendency to cause a temporary yellow and green tint to be noticed in sight, and more significant issues adjusting from light to dark settings.


ACP-105 is another non-steroidal Selective Androgen Receptor Modulator (SARM). Acadia (the company that produced this SARM) proposes that ACP-105 is as potent as Testosterone in in vitro assays without interaction at other hormone receptors. In addition, ACP-105 demonstrates potent anabolic effects on muscle and bone with minimal effect on prostate in preclinical models (hence it being a genuine SARM). While the research (albeit limited) is promising, there are no clinical studies on human subjects; consequently any conclusions or theories we develop around the compound have to be taken with a grain of salt. 1 mg/kg per day was given to the research subjects, and that resulted in a very blatant anabolic effect. The extent of this anabolic effect is measured in what % of hypertrophy occurs relative to the baseline that DHT would otherwise achieve had the research subject not undergone ORX-induced atrophy. The % of anabolic activity was determined to be 67%, with only 21% reversal of the prostate gland (which is used to measure androgenic activity). From this we can conclude that this SARM has an anabolic:androgenic rating/ratio of 3.19:1


This SARM seems relatively weak from the data we have gathered, but the main appeal of it is that there should be significantly less suppression than many of the more mainstream SARMs, and supposedly this SARM is still undetectable, so any drug-tested athlete would hypothetically be able to get a sizeable edge from AC-262536. AC-262536 exerted up to 66% of the anabolic benefits of Testosterone, while simultaneously only exerting 27% as much Androgenic activity. From this we can conclude that AC-262536 has an anabolic:androgenic rating/ratio of 2.45:1

Very Suppressive SARMs:

LGD-4033 (Ligandrol)

LGD-4033 is often touted as the most effective SARM for overall anabolism, muscle retention, and muscular hypertrophy. It is very potent, and reports of 10+ pounds of lean muscle gain are commonly reported from users. LGD-4033 is a selective androgen receptor modulator (SARM) developed to prevent muscle wasting, osteoporosis and a variety of other musculoskeletal degenerative diseases. It is non-steroidal, and is ingested orally. It binds to the androgen receptor with an extremely high affinity and selectivity, and once it does this it exerts exceptional anabolic effects in muscle and bone. Comparing LGD-4033 to Ostarine head to head, LGD-4033 exhibits greater levels of anabolic activity at a lower dosage, but is far more suppressive than Ostarine.


LGD-3303 is a full agonist on muscle and a partial agonist on the prostate. At the 1 mg/kg/day dosage (the dosage roughly equivalent to the standard starting daily dosage for research in humans) the effect on prostate weight (proposed androgenic activity) was minimal relative to what baseline prostate weight was when the research subject wasn’t using LGD-3303 at all. With this statistic, it can be assumed that the androgenic effects in the body are minimal at the effective dosage for muscle building purposes, thus making it a very promising SARM. Reports among those who have experimented with both LGD-4033 and LGD-3303 commonly note that there seems to be less water retention associated with LGD-3303, but mg:mg LGD-4033 still seems to be the more effective SARM.

RAD140 (Testolone)

RAD140 was designed to act as a complete replacement for Testosterone, without any of the negative androgenic side effects. RAD140 has an anabolic:androgenic rating of 90:1 and partially antagonizes the negative effects of testosterone on the prostate. Initial steroid research sought to synthesize a compound with a high level anabolic activity, coupled with a low level of androgenic activity. Testosterone has an anabolic:androgenic rating of 100:100. Meaning that RAD140 is almost as anabolic as Testosterone, with 1/100th the Androgenic activity (on paper at least). RAD140 has all the hallmarks of a SARM. It is potency selective, since it stimulates muscle weight increases at a lower dose than that required to stimulate prostate weight increases. RAD140 is a very versatile and promising SARM that purportedly provides a complete replacement for testosterone replacement therapy (TRT), without any of the side effects. The overall preclinical profile of RAD140 is very good, and the compound has completed preclinical toxicology in both rats and monkeys. Notably increased aggression and agitation is commonly reported among users.


S23 is the strongest SARM to date, often being compared to S4 in terms of its' anabolic and muscle hardening effects, without the binding to the ocular receptors issue. It is purported to be a stronger version of S4 without the night vision side effect, but with a greater amount of suppression. S23 is the most suppressive SARM of all, with a 50% drop in Luteinizing hormone (LH) occurring after only 14 days of research.

YK11 (Myostatin Inhibitor)

YK11 is not actually a SARM, despite commonly being lumped into the SARM category. YK11 is a Myostatin inhibitor. YK11 works by attaching itself to the androgen receptor, and stimulating the muscle cells to produce more Follistatin, consequently inhibiting Myostatin in the body. Myostatin acts as a regulator of skeletal muscle mass, limiting how much muscle the body can grow, and inhibiting Myostatin ultimately results in more overall muscle growth. YK11 appears to have minor liver toxicity, and its' chemical structure differs greatly from that of traditional SARMs as it resembles the chemical structure of DHT (dihydrotestosterone) very closely.

Other (Not Suppressive/Not SARMs):

MK-677 (Ibutamoren)

MK-677 is a potent GH secretagogue taken orally. A GH secretagogue is a substance that signals the pituitary gland in the body to secrete more growth hormone. Much like SARMs, it is non-steroidal. MK-677 is not a SARM in any capacity, despite commonly getting lumped into that category. MK-677 will not cause any natural Testosterone suppression. After ingestion, MK-677 greatly increases the release of Growth Hormone (GH) and Insulin-Life Growth Factor 1 (IGF-1) for the next 24 hours via strong GH pulsations in the pituitary gland. MK-677 does not stimulate a greater quantity of secretion events per day (number of GH pulsations), but rather it stimulates a greater total 24 hour GH production rate. Ibutamoren can substantially increase the strength of each GH pulsation that occurs in the body. Clinical trials are currently being conducted to assess how well MK-677 can address growth hormone deficiencies, muscle wasting diseases, osteoporosis and a myriad of other related conditions. So far MK-677 has proven to be exceptional in all of these studies, resulting in overall increases in bone mineral density and lean muscle mass in humans. MK-677 also improves fat burning, thus making it a potentially viable option in the future for the treatment of obesity. The overall safety and efficacy profile of MK-677 is promising, with no serious adverse events reported in any of the clinical trials conducted on humans. The data supports that it has the potential to be a very safe compound viable for long-term use.

Cardarine (GW-501516)

Cardarine is a PPARδ receptor agonist that binds to and activates the peroxisome proliferator activator receptor delta. Activation of PPARδ can increase overall energy, fat burning potential, muscle building potential, cardiovascular endurance, insulin sensitivity, and improve lipid levels in the blood. Prior to its abandonment in 2007 Cardarine was being studied to assess its potential therapeutic applications in a clinical setting for treating metabolic diseases and cardiovascular diseases. Of the myriad of specific health benefits noted in the clinical trials conducted on Cardarine, the most notable are its ability to lower “bad” cholesterol levels (LDL levels), increase “good” cholesterol levels (HDL levels), combat obesity, improve cardiovascular health markers, and potentially even help prevent diabetes. The data supporting its efficacy in all of those areas is strong. Anecdotal reports commonly note greatly improved cholesterol levels, and remarkably improved cardiovascular endurance.


SR9009 is a synthetic Rev-ErbA ligand that works by increasing the mitochondria count in the muscles, decreasing fat storage, increasing glucose and fatty acid use in muscle, improving cholesterol levels, decreasing the generation of new fat cells, and increasing oxygen consumption.

Where to Buy SARMs Internationally?

To buy SARMs internationally, be sure to read Science.bio's shipping information section.

They will ship anywhere SARMs are currently legal, and offer a money back guarantee.

Again, BEFORE you buy SARMs, I must stress how important it is that you check if these products are legal in your country.

By the time you read this, SARMs might be banned in your country.

Be sure to check all laws in your country prior to buying anything to make sure it is compliant where you live with your current government laws.

Make Sure You Buy Pure, Real SARMs

If you’re wondering “where can I buy SARMs?”, do yourself a favor and give Science.bio a try.

Whether you’re brand new to SARMs or a veteran, I guarantee that these will be better than any other SARMs company you’ve had experience with.

Don’t fall prey to hyped up marketing, cheap prices and other tell-tale signs that you’re dealing with a poor quality company.

There’s a gigantic difference between good SARMs and bad SARMs, and there’s a world of difference between just mediocre SARMs and great SARMs.

99%+ Pure Third Party Tested SARMs

At the checkout menu, you can enter the Science.bio discount code “DC10” to save 10% on your entire order.

Disclaimer: The information included in this article is intended for entertainment and informational purposes only. It is not intended nor implied to be a substitute for professional medical advice. Prior to buying anything, check that it is compliant where you live with your current government laws.

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46 thoughts on “My Recommended Source to Buy SARMs”

  1. Hi! This is a great read! Regarding PCT’s. Proven Peptides don’t seem to sell clomid? Any reliable source for that? Thank you!

  2. What are your thoughts on sarmtech.net? You might not be familiar but just curious. I was wondering if you had any idea of their authenticity.

  3. Derek thanks for all the great info and keep up all the good work. I recently heard of a new capsule sarm company in Canada called androbolics, have you ever heard of them?

  4. Hey mate

    I just discovered you site and its full of good info, great job.

    Can you suggest some good sites in Australia to buy SARMS from.

    Thank you.

  5. Hi Derek,

    Thanks for all the information, it’s a very good post.
    I would like to ask you if you have any idea about the quality of Fusion Supplements or Olympus Lab Sarms ?

    1. Apparently their Androtest is Legit from Fusion. I tried Olympus UK Ostar1ne in 2018 too and I felt absolutely amazing, strength gains etc so whatever it was, it worked. However, I’m UK based like yourself and my Chemyo order took 1 week to get here. Looking forward to it.

  6. Derek I was wondering if you have any info on a couple sarms company’s. Umbrella labs, and MMG labs. Are they legit and are there products high quality. Thanks

    1. I’ve never heard of either to be honest, sorry brother. If they have third party tests with good results that checkout and there are a significant amount of credible unbiased reviews online then they might be worth a shot.

  7. Hey Derek,

    Proven Peptides are looking pretty good. Are you still 100% sure that they are legit SARMS?

    I previously ordered from CHEMYO. I noticed you dont have a discount code with them anymore. Any reason this is the case, do you still fully trust them to provide good sarms? They have a guanratee with customs seizure to reship for free, which is why I am inclined to order with them.


    1. I don’t shop around anymore as I have no reason to. If they have third party testing and the results look solid, then consider giving them a try. If they don’t then you would probably be better off shopping elsewhere.

  8. Hi Derek, was wondering if you had heard on Narrows Labs? seem to be the latest thing for legit sarms, any thoughts? I have also purchased from Purerawz, the lgd4033 and s23 had great results but the mk677 made me very lethargic. Also liver enzymes were eleveated on all of their sarms from Purerawz. Was hoping to try proven peptides or narrows labs. thank for all you do.

    1. Yes, Narrows is solid. I have been satisfied with everything I’ve ordered there so far. Code D25 will save you 25% at Narrows checkout.

  9. Just want to let you know you are f*cking awesome for all these writeups! Have learned so much and have read countless articles here on your site.

    I’ve been ordering with Narrows and I realize they are on your list of approved companies. I’ve been satisfied with their products, but do you think there will be a difference in results switching from Narrows to Proven Peptides products? Your 25% code with Narrows really seals the deal for me with them. That’s why I ask. Thanks for all the help!

    1. Both companies have very recent third party tests with great results, so there should not be a significant difference.

  10. Hope i can get this q answered considering this is an old article.

    After reading more and more about sarms ive become very interested in them, ive used almost every aas under the sun and after being on deca for 4 mo switching to tren for 3 months(brilliant i know) i experienced some clear prostate swelling to the point of having urinary problems.

    I got rid of it with a supplement that contained a handful of research backed ingredients that showed improvement in bph patients but it has made me somewhat weary on starting another cycle.

    Do i understand correctly that sarms are able to replicate the effects of aas without acting on the prostate as much and as such not antagonizing possible bph symptoms?

    1. You can still get a hold of them, as they are being sold wholesale. I have ordered recently and have had excellent results. Rad140, S23 and Ostamuscle.

  11. Some supplement stores are selling capsule form sarms. How legit are these. The ones ive seen have an SP logo in Black and White. Could they be prohormones in disguise?

  12. My personal favourite has to be PureRawz when it comes to purchasing SARMs online. They have the widest variety Pure A-Grade SARMs and provide COAs on all their products. They are very well-priced and always have the best promotions. I have been using them for the past 5 years and I have never been disappointed! You can visit them at https://purerawz.co and if you want 10% off your order you can use my code: “Felinex10”

  13. Since it is becoming more difficult to buy sarms and science.bio is closing, do you have other recommended suppliers? Places that actually provide the COA for sarms showing they are legitimate.

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