Chemyo Review: An Excellent Brand or Overhyped?

Who Are Chemyo?

Chemyo is arguably the first company that comes to mind when someone references selective androgen receptor modulators (SARMs).

Chemyo is an American firm based in Wilmington, Delaware. It is known for its high-quality SARMs and reliability within a niche that often exists in a gray area.

Are Chemyo’s Products Legal?

SARMs are illegal for cosmetic use, such as in bodybuilding. However, in the US and the UK, they are legal for research purposes—specifically, administering them to a group of rodents and monitoring the effects. In Australia, SARMs are only available with a doctor’s prescription. Individuals should check the legal status of SARMs in their own country before ordering.

Chemyo Pros

• Over 99% purity
• International shipping
• Free shipping
• A variety of payment options
• An established brand
• Prompt customer support

Over 99% Purity

Every SARM from Chemyo is formulated at over 99% purity due to their recrystallization techniques, which yield higher purities [1].

Chemyo provides third-party certificates of analysis (COAs) to customers, confirming the purity of its products. We have also observed very positive results from Chemyo’s SARMs, indicating that the compounds listed on the label are present.

There are different types of SARM companies:

• Companies that provide high-quality products and are worth paying for.
• Those that are more affordable and thus more likely to contain diluted compounds and lower purities.

Chemyo is in the former category, alongside reputable brands like Swiss Chems, which also guarantees over 99% purity.

A 2017 investigative study conducted by the Journal of the American Medical Association found the following after purchasing 44 SARM products online [2]:

• 52% of the products contained SARMs
• 25% contained hidden compounds (not written on the label)
• 9% did not have a detectable substance
• 59% contained differing substance quantities compared to what was specified on the bottle.

These statistics reinforce the importance of sourcing SARMs from a legitimate supplier, with verified and recent third-party COAs.

International Shipping

In our experience, high-quality SARM companies are becoming increasingly reluctant to ship overseas due to packages being delayed or seized.

Chemyo, however, does ship internationally to:

1. Canada
2. United Kingdom
3. Some North American, South American, and African countries.

However, Chemyo does not appear to ship to Europe at this time (excluding the UK).

Free Shipping

Customers are entitled to free shipping when:

• US orders are $100+.
• Non-US orders are $275+.

In our experience, Chemyo’s shipping is relatively prompt. We have had domestic (US) orders arrive in 3–5 days. Our international orders (to our UK location) took 12 days.

Variety of Payment Options

Chemyo offers an array of payment options, which currently are as follows:

• Checkbook (5% discount)
• Solana (5% discount)
• Credit or debit card via Max Redemption or Verified-Pay (7.95% fee)
• Bitcoin (10% discount)
• Zelle (7.95% fee)

Bitcoin can be the most economical way to pay for SARMs from Chemyo, although this payment method may not suit everyone.

An Established Brand

We have found Chemyo to be an honest and ethical company that has consistently produced some of the purest SARMs on the market for several years.

Thus, Chemyo is not a new or obscure SARMs brand where you may worry about your package not arriving.

Chemyo has accumulated a vast customer base, the majority of whom appear to be pleased with their products.

Prompt Customer Support

Chemyo’s 24/7 live chat support has responded to our queries within minutes. We have also tested their response time via email. On August 6, 2025, at 01:46 am, we asked if Chemyo provides wholesale or dropshipping options. They replied on August 6, at 02.53 am (1 hour and 7 minutes later).

If researchers have an urgent matter, they are likely to receive a faster response from Chemyo through the live chat function on their website.

Bitcoin Discount

Chemyo offers researchers a 10% discount when paying with Bitcoin or other cryptocurrencies. While several companies, including Pure Rawz and Sports Technology Labs, also provide a 10% discount, others, such as Swiss Chems, do not offer any savings with this payment method.

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.

Chemyo Cons

• 7.95% credit card fee
• No peptides
• No stealth shipping; packages may be delayed or seized.

Credit Card Fee

A 7.95% credit card fee may be a drawback for thrifty customers seeking maximum savings.

While it may not be a major issue for some, the fact that other SARM companies charge less or even nothing for credit card transactions represents a disadvantage.

No Peptides

Various other SARM companies offer peptides, such as BPC-157 and TB-500, alongside SARMs, but Chemyo has not taken this approach.

Chemyo previously discontinued their LGD-4033 product; however, it is now available for purchase again under the name LGD-4.

No Stealth Shipping

In our experience, Chemyo’s packaging is not discreet, which benefits their credibility. However, this lack of discretion poses challenges for successfully delivering international orders.

Although our items arrived in less than two weeks in the UK, some researchers have reported significant delays at customs, with delivery times extending up to a month or even resulting in seizure

If you are a native US citizen, Chemyo’s shipping is typically straightforward and fast. However, because of their transparent and intentional packaging, non-US researchers may experience some delays.

Chemyo Reviews

The following Chemyo reviews have been published by researchers in our Facebook group.

I’m on testosterone replacement therapy, and MK-677 from Chemyo made a huge difference in fullness and vascularity. I’m hungry all the time, but I feel great. Pumps are insanely tight. I definitely blew up.

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100% great quality products, and you get more quantity for your money too. I have never heard anyone have a bad experience with Chemyo. I am currently running LGD-4033 from Chemyo, and it’s amazing.

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I have been taking RAD-140 from Chemyo for the last 3 months at only 10 mg a day, and it works great.

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I’ve used the MK-2866 and MK-677 value pack before and had pretty impressive results with stamina, muscle hardness, and muscle growth. Now I’m hoping to have similar results, but more growth with their MK-677 and LGD-4033. I’ll keep the group updated. But yes, very good SARMs, and I would highly recommend either them or Sport Asylum.

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Chemyo is the best and legit. I just ordered my second bottle of Ostarine from them; great customer service and fast delivery.

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I have used Chemyo and Rat’s Army and have had really good results! You won’t be disappointed!

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Should Researchers Purchase From Chemyo?

Chemyo is one of the best SARM companies, based on the purity and efficacy of their products.

However, Chemyo can improve by correcting the following:

• 7.95% credit card fee
• 7.95% Zelle fee
• Lack of peptide products

Sports Technology Labs is an alternative source that offers peptides and does not include a credit card fee at checkout.

Sports Technology Labs Pros:

• 0% credit card fee
• Over 98% purity (confirmed with COAs)
• Slightly lower prices than Chemyo
• 10% cryptocurrency discount
• Peptides in stock
• Excellent, fast customer support
• 15% discount codes are available, compared to 10% for Chemyo

Sports Technology Labs Cons:

• Does not ship outside of the US
• No capsule SARMs

Thus, US researchers could achieve additional savings when ordering from Sports Technology Labs while receiving the same high-quality products.

However, Chemyo is likely the superior option for those based in Canada or other non-US countries, as it offers international shipping.

Chemyo Customer Results: Before and After Photos

This is a Chemyo customer’s transformation after utilizing a conservative cycle of RAD-140, consisting of 10 mg/day for 7 weeks (although these before and after photos only showcase the results observed after the first 30 days).

Following his 7-week cycle, he reported gaining:

• 13 pounds in total weight
• 50 pounds on his bench press
• 30 pounds on his squat
• 40 pounds on his deadlift

Administration

Preclinical Research

Researchers can administer Chemyo’s liquid SARMs via the following steps:

1. Measure the required dose using the mL markings on the dropper. Thus, if the researcher wants to administer 1 mg of Chemyo’s RAD-140, this translates to 0.1 mL of liquid, as the product contains 10 mg/mL.
2. Insert a specialized gavage needle or tube into the rat’s esophagus and deliver the solution into the rat’s stomach. This methodology is frequently used in preclinical studies.

Clinical Research

During human trials, researchers can administer Chemyo’s SARMs to subjects by simply measuring the liquid, establishing the correct dose with a marked dropper, and then placing it in the subject’s mouth for swallowing.

Frequently Asked Questions

Will I Need Post-Cycle Therapy (PCT) After Using Chemyo’s Products?

A 2025 systematic review associated SARMs with endogenous testosterone suppression [3]. Additional research concluded that SARMs have the potential to impair male reproductive physiology, causing negative effects on spermatogenesis, the process of sperm development [4]. Whittaker et al. (2021) state that the following medications may aid in spermatogenesis recovery:

• Selective estrogen receptor modulators (SERMs)
• Human chorionic gonadotropin (hCG)
• Aromatase inhibitors (AIs)
• Recombinant follicle-stimulating hormone (rFSH)

Thus, PCT may be necessary to restore the function of the hypothalamic-pituitary-testicular axis (HPTA).

In our experience, an individual’s level of testosterone suppression can vary depending on their unique response to the compounds used and the dosages administered.

Patients may not experience any deterioration in well-being after administering Chemyo’s Ostarine or RAD-140, even though their total testosterone levels may have dropped significantly. In such cases, the individual can choose to supplement with Clomid or Nolvadex post-cycle, although this may not be necessary if their mood and energy levels remain normal.

Other patients may experience decreased libido, anxiety, or fatigue post-cycle, often resulting from the use of more potent compounds such as S23 or YK-11. In such cases, PCT is likely to be especially beneficial.

What is the Price of Chemyo’s SARMs?

Chemyo Product	Price
Ostarine (MK-2866)	$69.99
LGD-4	$79.99
RAD-140	$79.99
Cardarine (GW501516)	$59.99
MK-677 (Ibutamoren)	$79.99
Andarine (S4)	$79.99
YK-11	$79.99
SR9009 (Stenabolic)	$79.99
AC-262	$79.99
ACP-105	$79.99
GW0742	$69.99
S23	$69.99
RAD-150	$79.99

What Are the Potential Benefits of Chemyo’s SARMs?

Based on existing studies, SARMs have the potential to increase:

• Muscle hypertrophy (size)
• Muscular strength
• Endurance
• Fat loss

How Do Chemyo’s Products Work?

SARMs can enhance anabolism (muscle building) through androgen receptor stimulation, consequently increasing protein synthesis and nitrogen retention in muscle cells.

Some SARMs may improve endurance by enhancing mitochondrial efficiency and stimulating erythropoiesis (red blood cell production). This can contribute to increased energy production and oxygen delivery to the muscles, delaying the time it takes to fatigue.

Certain SARMs can enhance fat loss by:

• Increasing metabolic rate
• Suppressing appetite
• Enhancing fat oxidation

Can Chemyo’s Products Cause Side Effects and Are They Safe?

SARMs are not considered safe for human use, as they have not yet received FDA approval and have limited clinical research available. While some studies and case reviews have described SARMs as safe in certain contexts, they have also been associated with toxic effects in others. A summary of some of the research conducted on SARMs is provided below.

LGD-4033

A randomized controlled trial found LGD-4033 to be well-tolerated in 76 healthy men, after receiving dosages of 0.1, 0.3, or 1 mg per day for 21 days. Basaria et al. (2013) concluded that LGD-4033 “was safe” despite observing reductions in HDL and testosterone. They reported no changes in aspartate aminotransferase or alanine aminotransferase [5].

RAD-140

A clinical study found the SARM to have an “acceptable safety profile” following doses of 50 mg, 100 mg, and 150 mg per day. However, raised liver enzymes, vomiting, dehydration, and decreased appetite were reported as some of the side effects [6].

Ostarine

In a 2024 study, Ostarine was administered to 120 men, over the age of 60, for 12 weeks. A dosage of 3 mg/day did not produce more notable side effects compared to the placebo group [7].

YK-11

A study in rats found that 0.35 g/kg of YK-11 altered hippocampal neurochemistry, leading to forgetfulness [8]. Thus, YK-11 may be neurotoxic (damaging to the brain). The researchers also observed increases in IL-1β and IL-6 cytokines (small proteins that influence immunity) following YK-11 administration, indicating heightened inflammation and oxidative stress.

MK-677

Murphy et al. (1998) reported that 25 mg/day of MK-677, administered over two 14-day periods, did not cause any notable side effects [9]. It was described as “generally well tolerated.”

Cardarine

When administered in high dosages and for extended durations, this peroxisome proliferator-activated receptor delta (PPARδ) agonist has been shown to cause cancer in mice. In other studies, doses of 10 mg/kg and 30 mg/kg of Cardarine inhibited tumorigenicity in female mice with nasopharyngeal carcinoma (a type of throat cancer) by suppressing cell division at the G2/M phase and promoting apoptosis (cell death) [10]. Currently, there is a lack of data regarding the carcinogenic effects of Cardarine in humans. 

S4

We have found that S4 can cause transient (temporary) ocular changes in some patients, resulting in a yellow tint to their vision. However, we have not observed any permanent vision alterations following supplement cessation.

S23

In preclinical research, S23 temporarily impaired spermatogenesis (sperm production) by decreasing luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in rats [11]. This effect was shown to be reversible following S23 treatment, which is promising for safety.

How Can Researchers Contact Chemyo?

• Email: Support@chemyo.com
• Address: 4023 Kennett Pike STE 59371, Wilmington, Delaware, 19807, USA
• Phone: +1 302 543 2011

Does Chemyo Have a Refund Policy?

Chemyo responds to refund requests on a case-by-case basis.

Can Chemyo’s Products Cause an Athlete to Fail a Drug Test?

Yes, SARMs are banned in various sporting organizations, including:

• World Anti-Doping Agency (WADA)
• United States Anti-Doping Agency (USADA)
• International Olympic Committee (IOC)

Athletes should consult with their respective governing bodies to verify whether SARMs are prohibited in their sport.

Summary: Is Chemyo Reliable?

Chemyo is a reliable source for researchers based in the United States, as there are typically no issues with their domestic shipping.

However, Chemyo does not offer discreet shipping; therefore, overseas orders may be less reliable due to an increased risk of customs seizures. Nonetheless, we have not experienced any issues receiving several packages at our UK location.

Note: SARMs are intended solely for research purposes and are not approved for human consumption [12]. Additionally, SARMs may pose health risks similar to those associated with anabolic steroids [13]. Individuals contemplating the use of SARMs or other performance-enhancing substances are advised to consult a healthcare professional before proceeding.

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