3 Best SARMs Companies in 2025 (>98% Purity)

Research by the Journal of the American Medical Association (JAMA) indicated that 48% of selective androgen receptor modulators (SARMs) are either counterfeit, inadequately dosed, or substituted with inexpensive and hazardous substances (1).

Although studies have shown SARMs to have anabolic effects (2), acquiring them may be risky due to their unregulated nature (3). Consequently, numerous rogue manufacturers have emerged, attempting to shortchange customers with placebos.

According to Dr. Mike Israetel, “Counterfeit SARMs commonly contain cheap anabolic steroids like Winstrol and Dianabol,” because they are cost-effective replacements.

This may pose additional risks to researchers who source SARMs from untrustworthy firms.

We have also observed a shakeout in the SARMs manufacturing sector due to intensified FDA scrutiny and COVID-19-related pressures, resulting in the closure of numerous companies.

Nevertheless, a select few organizations have endured the challenges and continue to operate. This is mostly attributable to these sources operating with integrity and ethics while formulating efficacious SARM products.

Below are the three best SARMs companies in our experience:

1. Sports Technology Labs: 19/20
2. Chemyo: 18/20
3. Amino Asylum: 16/20

We have rated each company based on:

• Potency
• Product diversity
• Cost
• Payment options
• Delivery
• Communication

1. 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 manufactures SARMs with a minimum purity of 98%, which contributes to their generally positive online reputation. They are among the few companies that provide Certificates of Analysis (COAs) for each product. These COAs are conducted by a third-party laboratory, MZ Biolabs, and can be viewed below.

Dr. Jim Stoppani highlights the importance of acquiring SARMs from reputable companies that provide certificates of analysis, saying, “It is a gamble” not to know what is in the bottle.

Customers utilizing SARMs from Sports Technology Labs may experience improved results due to their higher purity levels and the absence of counterfeit or diluted products (4). Below is an illustration of a customer’s transformation after using these products.

The above Reddit user completed a cycle of Sports Technology Labs’ SARMs. He utilized a 5-week cycle consisting of 5 mg/day of LGD-4033, 15 mg/day of RAD-140, and 25 mg/day of MK-677. He gained 16 pounds of lean mass while reporting exceptional increases in strength.

Considering that the user had previously used steroids, these results are noteworthy, as the potential for growth from SARMs is generally reduced in comparison to that of a natural weight trainer.

Product Range: 5/5

Sports Technology Labs’ SARMs are available in liquid and powder form.

Liquid Inventory

Product	Price	Dose	Bottle Volume
RAD-140	$59.99	15 mg/mL	450 mg (30 mL)
Ibutamoren	$59.99	25 mg/mL	750 mg (30 mL)
Ostarine	$49.99	25 mg/mL	750 mg (30 mL)
LGD-4033	$54.99	10 mg/mL	300 mg (30 mL)
Cardarine	$54.99	20 mg/mL	600 mg (30 mL)
Stenabolic	$59.99	50 mg/mL	1,500 mg (30 mL)
YK-11	$54.99	10 mg/mL	300 mg (30 mL)
Andarine	$54.99	50 mg/mL	1,500 mg (30 mL)
S23	$54.99	20 mg/mL	600 mg (30 mL)
RU-58841	$54.99	50 mg/mL	1,500 mg (30 mL)

Pricing: 4/5

Sports Technology Labs offers products that are priced competitively relative to other brands in the market. They also provide discounts during special annual events, such as a 40% discount on Black Friday.

Payment, Shipping, and Communication: 5/5

Sports Technology Labs Payment Methods
Credit and debit cards
Bitcoin and other cryptocurrencies
Zelle
Electronic bank transfer

When customers purchase with Bitcoin, they can receive an additional 10% off their order.

Sports Technology Labs does not charge a credit card fee, whereas some other companies can charge up to 10%. If customers require other payment methods, Sports Technology Labs is open to discussing them via email.

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

Sports Technology Labs provides prompt communication via email. When we requested information from the owner, he responded quickly—even while on vacation.

Sports Technology Labs Pros:

• Minimum 98% purity
• COAs provided
• Vast product selection and payment options
• 0% credit card fee

Sports Technology Labs Cons:

• Does not provide shipping services outside of the United States.

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.

Researchers have posted the following reviews on Facebook regarding Sports Technology Labs’ SARMs:

I have to say that Sports Technology Labs is my go-to source, with their 3-day delivery and amazing products. Highly recommended.

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I only order from them and always get effective products. The delivery time is fast. They are quite expensive, but worth the money.

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Sports Technology Labs is 100% legitimate.

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2. Chemyo

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

Effectiveness: 5/5

Chemyo has efficacious products with a minimum chromatographic purity of over 99%. Such levels of purity are possible via the process of recrystallization (5).

Chemyo also uses a third-party laboratory, S and N Labs, to authenticate the purity of their products.

The high purity levels of Chemyo’s products also correlate with their customers’ consistently positive results.

The above user took Chemyo’s Ostarine at 25 mg/day, RAD-140 at 30 mg/day, and Cardarine at 20 mg/day for six weeks, resulting in a 25-pound weight gain and a 30-pound increase in bench press strength after the first week. These results are above average for SARM use.

Factors that may have contributed to this outcome, such as his training schedule and nutrition, are not specified.

Product Range: 4/5

Chemyo offers its products in both liquid and powder forms. Each bottle contains 50 milliliters compared to the industry standard of 30 milliliters.

The sole drawback of their product line is the exclusion of LGD-4033, which was discontinued as a result of a cease-and-desist letter from the patent proprietor. Additionally, Stenabolic is no longer available for purchase.

Product	Price	Dose	Bottle Volume
RAD-140 (Testolone, Vosilasarm)	$69.99	10 mg/mL	500 mg (50 mL)
Ostarine (MK-2866, Enobosarm, GTx-024, S-22)	$59.99	25 mg/mL	1,250 mg (50 mL)
Ibutamoren (MK-677)	$69.99	25 mg/mL	1,250 mg (50 mL)
Cardarine (GW-501516)	$54.99	10 mg/mL	500 mg (50 mL)
Andarine (S-4, GTx-007)	$74.99	50 mg/mL	2,500 mg (50 mL)
YK-11 (Myostine)	$74.99	10 mg/mL	500 mg (50 mL)
GW0742 (Fitorine)	$59.99	10 mg/mL	500 mg (50 mL)
S23	$54.99	20 mg/mL	600 mg (30 mL)
RU-58841 (PSK-3841, HMR-3841)	$54.99	50 mg/mL	1,500 mg (30 mL)

Pricing: 4.5/5

Initially, Chemyo’s SARMs appear to be priced standardly. However, when factoring in the additional volume in their vials and calculating the total milligram content, the overall cost may offer a potential advantage compared to other brands.

Payment, Shipping, and Communication: 4.5/5

Chemyo provides a variety of payment options.

Accepted Payment Methods
Credit and debit cards
Bitcoin
Solana

One drawback is the 7.95% fee added when purchasing with a credit card. This percentage is higher than what some other SARMs companies charge. However, this fee does not apply to customers purchasing with Bitcoin.

Chemyo previously offered a 10% discount for payments made via cryptocurrency; however, this promotion has been discontinued.

They offer domestic shipping within the United States, with orders typically arriving in 2–5 days.

We tested Chemyo’s customer response time via email. We sent them a message at 6:25 am on July 2, 2025, and they replied at 5:14 pm on July 4. Thus, it took 34 hours and 49 minutes for Chemyo to answer our query.

Prompt communication is essential, as delays could present challenges for researchers if any issues arise with their orders. This risk may be heightened due to the illegal status of SARMs for human consumption (6).

Chemyo Pros:

• Over 99% purity
• COAs provided
• Higher volume of liquid per bottle
• Prompt customer support

Chemyo Cons:

• No Stenabolic product available
• 7.95% credit card processing fee

Feedback from Chemyo customers on Facebook can be seen below.

I just ordered Chemyo’s MK-677 and MK-2866 stack; so far I’m loving it!

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Chemyo is the real deal. Legit, easy, and fast shipping!

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Chemyo is the bomb. I love the research I’ve done with them.

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3. Amino Asylum

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

Effectiveness: 3.5/5

Amino Asylum’s products are generally well-received among the weightlifting community, although some customers on Reddit have described them as “hit and miss” and expressed concerns regarding product potency.

Here is a review published on Facebook by a customer:

I purchased from Amino Asylum four times, and the last time I received a counterfeit product; therefore, I stopped using them.

He later reported that Amino Asylum’s clenbuterol product was ineffective. He then experimented with another brand of clenbuterol at a lower dose and observed an immediate effect.

Thus, while the majority of customers may receive authentic SARMs from Amino Asylum, there is a possibility that some samples may not meet expected quality standards, leading to variable experiences.

Product Range: 4.5/5

Amino Asylum’s SARMs are in liquid form.

Product	Price	Dose	Bottle Volume
Ostarine	$29.99	20 mg/mL	600 mg (30 mL)
MK-677	$54.99	25 mg/mL	750 mg (30 mL)
LGD-4033	$34.99	10 mg/mL	300 mg (30 mL)
RAD-140	$39.99	20 mg/mL	600 mg (30 mL)
S23	$34.99	25 mg/mL	750 mg (30 mL)
Andarine	$29.99	25 mg/mL	750 mg (30 mL)
YK-11	$39.99	10 mg/mL	300 mg (30 mL)
Cardarine	$44.99	25 mg/mL	750 mg (30 mL)
GW-0742	$49.99	15 mg/mL	450 mg (30 mL)

Their product range also includes:

• Peptides
• Prohormones
• Post-cycle therapy supplements

The only reason we have not awarded Amino Asylum a five-star rating for their product range is the lack of powdered SARMs, which some users prefer because they are more cost-effective.

Pricing: 5/5

Amino Asylum’s pricing is significantly more affordable than that of other SARM brands, making them an attractive option for researchers fortunate enough to receive authentic SARMs. Nevertheless, there is a risk of obtaining subpar formulations, as some products may lack independent third-party testing to verify their quality and potency.

Payment, Shipping, and Communication: 3/5

Accepted Payment Methods
Credit and debit cards
Zelle

Amino Asylum has a 4% fee when purchasing by debit or credit card.

Shipping times can vary depending on the location of researchers, with some packages arriving in just a few days and others experiencing extensive delays, with slow correspondence via email.

We find that Amino Asylum does not consistently send a confirmation email for several days following a purchase. Therefore, there is generally no cause for concern if this occurs.

Amino Asylum Pros:

• Lower-priced SARMs
• Most customers appear to be satisfied.
• Excellent product selection

Amino Asylum Cons:

• No certificates of analysis available
• Some customers report ineffective products
• 4% credit card fee
• Poor email communication

Update: On the 19th of June, 2025, we received news that Amino Asylum has been shut down by the FDA.

Frequently Asked Questions

Which is the Best SARMs Company for Capsules?

The most common company our patients utilize for SARMs capsules is Swiss Chems. They offer:

• Guaranteed minimum product purity of 99%
• Worldwide delivery and discreet shipping

Our packages typically arrive within 3 business days in the US and 8 days in our UK location.

Swiss Chems, however, can improve by offering:

• Liquid SARMs
• Cryptocurrency discount for researchers

Which is the Best Company for UK Researchers?

When evaluating SARMs companies for researchers in the UK, several options are available.

UK SARMs provides a selection of liquid products, with purity levels exceeding 99%.

Although we have found UK SARMs’ compounds to be effective, they are priced at a premium level.

For those who prefer capsules, we have received positive feedback on products from Peak Body, which may offer a convenient alternative for some users.

What is the Best Source of SARMs in Canada?

Our Canadian patients have reported that American SARM sources tend to be more effective and less costly compared to domestic companies. The quality differences are evidenced by fewer Canadian companies providing certificates of analysis.

Sports Technology Labs does not ship to Canada. However, Chemyo and Swiss Chems can be utilized by Canadian researchers, with both companies formulating products at over 99% purity.

Chemyo manufactures liquid SARMs, while Swiss Chems produces capsules. We have found that delays are less likely with Swiss Chems, as they offer discreet packaging, enabling parcels to bypass customs without complications.

The main drawback of ordering from US companies is longer shipping times for Canadian researchers due to international shipping.

Which SARMs Company Provides Shipping to Australia?

Our Australian patients have successfully received orders from Swiss Chems and UK SARMs, thanks to their discreet shipping methods.

However, researchers should be aware that SARMs are only legal in Australia when accompanied by a prescription. As a result, several companies have ceased shipping to the country due to legal concerns and the requirement of an import permit.

Is it Possible for SARMs to Cause Adverse Interactions?

Yes, research has shown that SARMs can lead to several negative effects, including:

• Androgenetic alopecia
• Edema
• Testosterone suppression and hypogonadism (7)
• Cholesterol alterations (8)
• Hypertransaminasemia (9).

Our research reveals that these side effects can be transient, commonly improving once supplementation is discontinued (10). However, declines in long-term health remain possible, particularly when users administer excessive dosages or engage in prolonged cycles (11).

Following high dosages of SARMs, two of our patients were diagnosed with hepatic peliosis and jaundice (12). However, Christiansen et al. (2020) suggest that other users may not report any obvious side effects (13). Thus, toxicity appears to be related to:

• The dosage administered
• The duration of the cycle
• The use of potentially hepatotoxic medications in conjunction with SARMs

What Should Consumers Know When Navigating the SARMs Market?

In our experience, companies that do not offer certificates of analysis or provide purity guarantees are more likely to be ineffective (14). However, researchers should be aware that COAs can also be forged, and therefore, they should verify them by contacting the third-party laboratory that conducts the testing for purity.

What Ethical Concerns Are Associated With Various SARMs Companies?

Currently, regulatory authorities have not approved SARMs for human consumption (15). Therefore, products in capsule form may raise concerns among regulatory authorities. Furthermore, they may shut down websites that feature reviews from bodybuilders utilizing these products for cosmetic purposes.

Verdict

We have selected Sports Technology Labs as the best SARMs company in 2025 for researchers seeking effective SARMs, awarding them a score of 19 out of 20.

This score is based on Sports Technology Labs’:

• Provision of COAs
• Guarantee of over 98% purity
• Extensive product selection
• Competitive pricing
• Positive checkout experience

However, Sports Technology Labs can still improve by providing a way for non-US researchers to access their products.

Chemyo is potentially the most prominent name in the SARM niche, offering several benefits. These consist of a product purity of over 99% and a larger liquid volume per bottle, as confirmed by COAs. However, the absence of Stenabolic from their product range and a 7.95% credit card fee leave room for improvement.

Amino Asylum may have been one of the best SARMs companies for researchers on a budget and willing to take a risk.

Irrespective of which company an individual may purchase SARMs from, Dr. Thomas O’Connor states that he has observed “steroid-like side effects” in SARMs users under his care. The FDA has echoed his concerns (16). Dr. O’Connor adds that health-conscious individuals “should not take any SARMs or steroids” to eliminate cardiac and hepatic risks, including atherosclerosis and cholestasis (17, 18).

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