3 Best SARMs Companies in 2023 (>98% Purity)

Dr George TouliatosDisclaimer: SARMs are only to be used for research purposes, as they are non-FDA-approved compounds and thus may cause adverse effects. If you have any questions or concerns, Dr. Touliatos is currently available for consultation.

Research conducted by the JAMA network revealed that 48% of SARMs are either fake, underdosed, or replaced with cheap and toxic compounds (1).

Although it is evident that SARMs work, buying them can be risky due to their unregulated nature. Consequently, many rogue manufacturers have emerged looking to short-change customers with placebos.

We have also seen a shakedown in the SARMs manufacturing sector, with FDA scrutiny intensifying (2), and COVID pressure resulting in several companies closing their doors.

However, there are a handful of companies that have weathered the storm and remain trading.

This is largely due to these manufacturers conducting themselves honestly and ethically while producing high-quality products.

Below are the 3 best SARMs companies on the market and their scores based on effectiveness, product range, pricing, payment, shipping, and communication.

  1. Sports Technology Labs (19/20)
  2. Chemyo (17/20)
  3. Amino Asylum (16/20)

Discontinued SARMs companies: Science.bio, Rats Army, Proven Peptides

1. Sports Technology Labs

sports technology labs

  • Effectiveness: 5/5
  • Product Range: 5/5
  • Pricing: 4/5
  • Payment, Shipping, and Communication: 5/5

Effectiveness (5/5)

Sports Technology Labs consistently receives excellent reviews online, thanks to their ability to produce high-quality SARMs (minimum 98% purity).

They are also one of the few companies on the market that provide COAs (certificates of analysis) for each product, which are conducted by a third party known as Colmaric Analyticals (3).

Note: We have a source who contacted Colmaric Analyticals to confirm that the COA’s for Sports Technology Labs were, in fact, accurate.

As a consequence of higher purity and no fake or diluted batches, customers can expect enhanced results from their cycles. See Sports Technology Labs’ customer transformation below.

sports technology labs results

This user utilized a 5-week cycle consisting of 5mg of LGD-4033, 15mg of RAD 140, and 25mg of MK677. He gained 16 pounds of lean mass while reporting exceptional increases in strength. These results are above average, especially as the user had used steroids in the past, which typically reduces a person’s potential for growth on SARMs (vs. a natural weight trainer).

Product Range (5/5)

Sports Technology Labs’ SARMs come in liquid or powder form.


  • Rad 140 – $59.99 (15mg/ml – 30ml) 450mg
  • Ibutamoren – $59.99 (25mg/ml – 30ml) 750mg
  • Ostarine – $49.99 (25mg/ml – 30ml) 750mg
  • LGD-4033 – $54.99 (10mg/ml – 30 ml)
  • Cardarine – $54.99 (20mg/ml – 30ml) 600mg
  • Stenabolic – $59.99 (50mg/ml – 30ml)
  • YK-11 – $54.99 (10mg/ml – 30ml) 300mg
  • Andarine – $54.99 (50mg/ml – 30ml) 1,500mg
  • S23 – $54.99 (20mg/ml – 30ml) 600mg
  • RU – 58841 – $54.99 (50mg/ml – 30ml) 1,500mg

Pricing (4/5)

Sports Technology Labs offers competitive pricing despite heavily investing in the quality of their products.

We find they are also among the most generous of SARM companies, known to give the largest discounts during special times of the year. For example, on Black Friday, they had a 40% discount.

Payment / Shipping / Communication (5/5)

Sports Technology Labs accepts Visa, Mastercard, Discover, and American Express with no additional fees at checkout. They also accept checks, Bitcoin, and the Cash App. When customers pay with Bitcoin, they can receive 5% off their order.

The main benefit of Sports Technology Labs, in terms of payment, is a 0% credit card fee. This is generous on their part and something that separates them from the competition.

Sports Technology Labs is open to accepting other payment methods if customers require them (which can be discussed via email).

They provide free shipping to US customers on orders over $99 and free international shipping on orders over $299.

Sports Technology Labs provide rapid communication via email. We requested some information from the owner, and he replied in a matter of minutes—even when on vacation. This is a company that treats you like a friend rather than just another customer, and it is done with authenticity and warmth.


  • High purity (>98%)
  • COA (certificates of analysis)
  • Excellent product selection and payment options
  • 0% credit card fee


  • None

Disclosure: We do not accept any form of advertising on Inside Bodybuilding. We monetize our practice via doctor consultations and carefully chosen supplement recommendations, which have given our patients excellent results.

Maximum Discount

sports technology labs

Discount code: Save 15% on Sports Technology Labs' SARMs by using discount code inside15.

2. Chemyo

chemyo logo

  • Effectiveness: 5/5
  • Product Range: 4/5
  • Pricing: 4.5/5
  • Payment, Shipping, and Communication: 3.5/5

Effectiveness (5/5)

Chemyo has exceptionally effective products, with a minimum chromotographic purity of >99%. Such (almost perfect) levels of purity are only possible via the process of recrystallization (4).

Chemyo also uses a third-party company (S&N Labs) to authenticate the purity of all their products.

This correlates with many of their customer’s results, which are consistently very positive.

chemyo results

The above user took Chemyo’s ostarine (25 mg/day), RAD 140 (30 mg/day), and cardarine (20 mg/day) for 6 weeks. He gained notable amounts of muscle hypertrophy, with his weight increasing by 25 pounds. His muscle definition and strength also increased, with him adding 30 pounds to his bench press in the first week of his cycle.

Product Range (4/5)

mk677 chemyo
Chemyo offers its products in liquid and powder form. Chemyo separates itself from the competition by increasing the volume (ml) of each bottle. Where the industry standard offers 30 ml bottles, Chemyo provides 50 ml. Thus, their prices are significantly better value than first perceived.

The only downside to their product range is the exclusion of LGD-4033, which they were forced to discontinue after receiving a cease-and-desist letter from the patent owner. They also no longer sell Stenabolic.


  • RAD 140 – $69.99 (10mg/ml – 50ml) 500mg
  • Ostarine – $59.99 (25mg/ml – 50ml) 1,250mg
  • Ibutamoren – $69.99 (25mg/ml – 50ml) 1,250mg
  • Cardarine – $54.99 (10mg/ml – 50ml) 500mg
  • Andarine – $74.99 (50ml/ml – 50ml) 2,500mg
  • YK-11 – $74.99 (10mg/ml – 50ml) 500mg
  • GW0742 – $59.99 (10ml/ml – 50ml)
  • S-23 – $59.99 (20mg/ml – 50ml) 1,000mg
  • RU – 58841 – $69.99 (50mg/ml – 50ml) 2,500mg

Pricing (4.5/5)

The pricing of Chemyo’s SARMs initially appears to be standard; however, after you equate for the extra volume in their bottles and calculate the total mg quantity, we find their products to be very good value for money.

Payment, Shipping, and Communication (3.5/5)

Chemyo offers a variety of payment options, including credit cards, bitcoin, and e-checks.

The main drawback with Chemyo is that they add a lofty 7.95% fee when paying by credit card. This is a high percentage compared to other SARM companies; thus, it is difficult to understand why such a costly fee is necessary.

However, this charge does not apply to customers paying with Bitcoin. Chemyo also offers a 10% discount when paying via crypto.

Worldwide shipping is available, with US orders taking 2–5 days to arrive.

In terms of communication, Chemyo took almost a week to reply to our first email (we also had to send a follow-up one before receiving a response).

They did not reply to our last email after over a week of waiting. Therefore, their communication appears to be lacking, which may be problematic for customers should any issues arise with their orders.


  • Very high purity (>99%)
  • COA (certificates of analysis)
  • Good value (more ml per bottle)


  • No LGD-4033 or Stenabolic
  • 7.95% credit card fee
  • Slow (or no) response via email

3. Amino Asylum

amino asylum

  • Effectiveness: 3.5/5
  • Product Range: 4.5/5
  • Pricing: 5/5
  • Payment, Shipping, and Communication: 3/5

Effectiveness (3.5/5)

In terms of effectiveness, Amino Asylum’s products are generally well-received among the weight-lifting community. However, a few customers have referred to them as ‘hit and miss’, with complaints of ‘bunk’ products, meaning that the active ingredient is being replaced.

Here is a customer review (via a forum), with a few others also sharing similar experiences:

Purchased 4 times, the last time was bunk, therefore onwards, stopped using them.

He later explained that Amino Asylum’s clenbuterol product had no effect. However, he tried a different brand of clenbuterol at a lower dosage immediately after and noticed a difference right away.
Thus, although the majority of customers may receive genuine SARMs from Amino Asylum, every once in a while, users may receive a bad batch.

Product Range (4.5/5)

All of Amino Asylum’s SARMs are in liquid form.

  • Ostarine – $29.99 (20mg/ml – 30ml)
  • MK-677 – $54.99 (25mg/ml – 30ml)
  • LGD-4033 – $34.99 (10mg/ml – 30ml)
  • RAD 140 – $39.99 (20mg/ml – 30ml)
  • S-23 – $34.99 (25mg/ml – 30ml)
  • Andarine – $29.99 (25mg/ml – 30ml)
  • YK-11 – $39.99 (10mg/ml – 30ml)
  • Cardarine – $44.99 (25mg/ml – 30ml)
  • GW-0742 – $49.99 (15mg/ml – 30ml)

Note: Their product range also includes several peptides, prohormones, and post-cycle therapy supplements.

The only reason we didn’t give Amino Asylum a 5 for ‘product range’ is due to powdered SARMs not being an option.

Pricing (5/5)

Amino Asylum’s pricing is very cheap compared to other SARMs brands. This can be an opportunity for those who receive genuine SARMs. However, due to a lack of COA’s, there is still a possibility of receiving a bad batch.

Payment, Shipping, and Communication (3/5)

Amino Asylum accepts debit and credit cards, Zelle, Cash App, Bitcoin, and other cryptocurrencies.

However, there is a 4% fee when paying by credit card, which is not the case with Sports Technology Labs (free).

Shipping times can vary depending on where you live, with some customers reporting packages arriving in just a few days, and others waiting longer (with slow correspondence via email).

We have found that Amino Asylum does not always send a confirmation email for several days after purchase, so do not panic if this happens.


  • Most Affordable SARMs
  • Many satisfied customers
  • Excellent product selection


  • No certificates of analysis (COA)
  • A few customers complain of ‘bunk’ products
  • 4% credit card fee
  • Poor email communication


rad 140
We have elected Sports Technology Labs as the best SARMs company in 2023, with an impressive score of 19/20.

Sports Technology Labs’ provision of COAs (guaranteeing >98% purity), excellent product selection, competitive pricing, and a positive checkout experience currently sets them apart from the competition.

Chemyo is perhaps the biggest name in the SARM niche, and they certainly have their advantages. These include a higher liquid volume per bottle, a 10% discount when paying via bitcoin, and >99% product purity (verified by COAs).

However, with Stenabolic and LGD-4033 missing from their product range, a hefty 7.95% credit card fee, and unprompt email responses, there remains room for improvement.

Amino Asylum may still be the best SARMs company for those on a budget and willing to take a risk. For customers who get good batches, buying from AA could mean saving money in the short term.

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