Research-grade SARMs
made in the UK with verified >99% purity with highest volume per bottle with official COAs that really work
made in the UK with >99% purity with official COAs that really work
ARCHEM is a UK-based manufacturer of research-grade SARMs,
produced in accordance with the highest pharmacological standards.
Max Muscle Labs is a reseller and an official partner of ARCHEM UK,
enabling us to control the quality of the products and manufacturing standards,
to supply our customers with the best possible product.

What'sin the bottle?
At MML we have rigorous quality control measures in place to ensure that our SARMs and other reference materials meet the highest standards.
Each batch is tested twice: once by our in-house laboratory using mass spectrometry analysis, and once by an independent third party laboratory issuing an official Certificate of Analysis (COA).
We confirm biochemical parameters such as: concentration, purity, chemical structure, absence of heavy metals, etc.
In this way, we know that our customers are receiving the highest quality product, giving them confidence in our products and services.


Explore our products
We have the highest concentration and volume on the market, with 100 pellets per bottle.
This equates to up to 70% more active ingredient than the market average, for the same price.
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MK-677 (Ibutamoren) / 100 x 10mg
Rated 4.94 out of 5(34 customer reviews) £49.90 — or subscribe and save 15% -
RAD140 / 100 x 10mg
Rated 5.00 out of 5(24 customer reviews) £49.90 — or subscribe and save 15% -
MK-2866 (Ostarine) / 100 x 10mg
Rated 4.95 out of 5(21 customer reviews) £44.90 — or subscribe and save 15% -
Enclomiphene / 100 x 10mg
£49.90 — or subscribe and save 15% -
LGD-4033 (Ligandrol) / 100 x 10mg
Rated 5.00 out of 5(3 customer reviews) £49.90 — or subscribe and save 15% -
S-4 (Andarine) / 100 x 25mg
Rated 5.00 out of 5(4 customer reviews) £44.90 — or subscribe and save 15% -
YK-11 (Myostine) / 100 x 10mg
Rated 5.00 out of 5(3 customer reviews) £54.90 — or subscribe and save 15% -
SR9009 (Stenabolic) / 100 x 10mg
Rated 5.00 out of 5(1 customer review) £49.90 — or subscribe and save 15%
-
MK-677 (Ibutamoren) / 100 x 10mg
Rated 4.94 out of 5(34 customer reviews) £49.90 — or subscribe and save 15% -
RAD140 / 100 x 10mg
Rated 5.00 out of 5(24 customer reviews) £49.90 — or subscribe and save 15% -
MK-2866 (Ostarine) / 100 x 10mg
Rated 4.95 out of 5(21 customer reviews) £44.90 — or subscribe and save 15% -
Enclomiphene / 100 x 10mg
£49.90 — or subscribe and save 15% -
LGD-4033 (Ligandrol) / 100 x 10mg
Rated 5.00 out of 5(3 customer reviews) £49.90 — or subscribe and save 15% -
S-4 (Andarine) / 100 x 25mg
Rated 5.00 out of 5(4 customer reviews) £44.90 — or subscribe and save 15% -
YK-11 (Myostine) / 100 x 10mg
Rated 5.00 out of 5(3 customer reviews) £54.90 — or subscribe and save 15% -
SR9009 (Stenabolic) / 100 x 10mg
Rated 5.00 out of 5(1 customer review) £49.90 — or subscribe and save 15%
Why researchers choose us?
Quality you can measure, service you can feel.
Fast delivery, quick support responses and clear updates throughout your order – so your research never stalls.
Subscribe & Save 15%

Subscribe to ensure research stability and receive your order automatically every 1, 2 or 3 months.
Predictable timing and cost efficiency for your research, backed by our 60-day money-back guarantee.
- Select your preferred frequency: once every 1, 2 or 3 months
- Control your delivery date
- Pause, adjust or cancel anytime
- 60 day money-back guarantee
Fast delivery

We ship fast: UK orders arrive in 24 hours and international deliveries land in 3–5 days.
Place your order before 3pm for same-day dispatch, and enjoy free shipping on any basket over £50.
- 48 and 24 hour UK shipping
- 3-5 days international shipping
- Same day dispatch (order by 3 pm)
- Free shipping over £50
Rapid support

Our AI assistant replies instantly, 24/7. If your query needs a human touch, we hand it straight to a product specialist.
From dispatch to delivery, we keep you in control.
- Fast responses during business hours
- Direct escalation for urgent enquiries
- Clear updates at every stage (confirmation, dispatch, tracking)
- Practical guidance from product specialists
Frequently asked questions
Regulations differ by jurisdiction and can change; in the UK, SARMs are not licensed for general sale and must not be marketed for human consumption.
We do not provide legal advice and recommend that customers check the local regulations before ordering from or using our website.
By making a payment, you confirm that you have read and agree to our Terms and Conditions, and that your purchase is intended for laboratory research, assay development or analytical use.
Ultimately, you are responsible for ensuring that your intended use and importation comply with the laws in your country or region.
Yes. SARMs are detectable in anti-doping and drug screening tests. They are classified as prohibited substances by WADA (World Anti-Doping Agency) and will flag positive on competitive sports or workplace drug screenings.
Yes. SARMs are detectable in anti-doping and drug screening tests. They are classified as prohibited substances by WADA (World Anti-Doping Agency) and will flag positive on competitive sports or workplace drug screenings.
Our SARMs are strictly for in vitro laboratory use and must not be used for human or veterinary diagnostic or therapeutic purposes.
We do not offer dosing advice, usage protocols, performance guidance or any content that implies human use. Our products are strictly sold for laboratory research purposes and are not intended for human or veterinary therapeutic or diagnostic use.
By purchasing, you confirm that you’re using the compounds solely for in-vitro or analytical purposes, and that you understand their legal and scientific context.
We accept all major debit and credit cards for secure checkout. If you'd like to pay via a different method (such as bank transfer or crypto), just reach out to us at moc.sbalelcsumxamobfsctd@troppus - we’ll do our best to accommodate you.
We offer same-day dispatch for all orders placed before 3 PM (UK time) Monday to Friday.
Weekend dispatch is limited to express shipping (Royal Mail: Special Delivery Guaranteed by 1 PM) - if the order is placed before 11 AM on Saturday.
We prioritise privacy. Orders are shipped in plain, unmarked mailing boxes with no indication of the product or our brand on the outside.
Inside, you’ll find our regular Max Muscle Labs branded packaging, as shown on the website.
Yes - we offer free shipping on all orders over £50. Below that threshold, rates are shown at checkout.
Average delivery times are:
Royal Mail: Tracked 48 - 2 working days after dispatch
Royal Mail: Special Delivery Guaranteed by 1 PM - Next working day after dispatch
Royal Mail International Tracked (3–5 Day Delivery) – usually 3 to 5 working days after dispatch, depending on local customs clearance
You’ll receive tracking information by email once your parcel has been dispatched.
International orders (including EU) may be subject to customs inspections and duties. However, we use discreet packaging and declare shipments appropriately to help avoid delays.
If your parcel is seized by customs despite our precautions, we guarantee a full refund. We’ve shipped thousands of international orders successfully - and if there’s ever an issue, our support team will resolve it quickly.
We ship globally with discreet packaging, and in the vast majority of cases parcels clear customs without issue.
However, if this ever happens and your order is seized, we guarantee a full refund.
We also email international customers a breakdown of packaging and customs handling details, so you know exactly what to expect.
We use a two-step verification process to ensure authenticity and purity:
Manufacturer testing (COA): Provided by ARCHEM, our UK-based production partner.
Independent lab testing (HPLC): Conducted by a third-party laboratory to confirm identity, potency, and absence of contaminants.
All products are tested for:
Heavy metals
Residual solvents
Microbiology
Batch numbers and expiry dates are printed on every container, and full documentation (COA, SDS, HPLC) is provided.
es. Alongside identity and purity testing, each batch is screened for:
Heavy metals (e.g. lead, arsenic, cadmium, mercury)
Residual solvents (from synthesis)
Microbial contamination
These tests are part of our independent HPLC verification. Results consistently show that our SARMs are free from these contaminants.
Documentation is included in your order and available on product pages.
Absolutely. Every product batch is accompanied by two certificates:
COA (Certificate of Analysis): Issued by ARCHEM (our UK-based manufacturer).
HPLC report: From an independent third-party lab to confirm purity and composition.
We follow a double-testing policy for full transparency. These documents are physically included in every parcel and can also be found on the corresponding product page, along with the SDS (Safety Data Sheet).
Each unit is marked with a batch number and expiry date for traceability. If you need help reading or interpreting any part of the COA, our support team is happy to assist - just email moc.sbalelcsumxamobfsctd@troppus
Every order comes with full documentation:
COA (Certificate of Analysis) - issued by the manufacturer (ARCHEM, UK).
HPLC results - from an independent lab.
SDS (Safety Data Sheet) - available on product pages and included in orders.
This ensures you have all the scientific data needed for research validation.
We understand that scientific reports like COAs and HPLC analyses can be difficult to interpret without a lab background.
Our support team is available to help explain results, columns, and terminology. Simply email moc.sbalelcsumxamobfsctd@troppus with your COA or product batch number.
We’ll provide a clear breakdown of what the data means for your research.
All of our SARMs have a shelf life of 24 months when stored at normal room temperature in a cool, dry place.
Potency may slowly decline beyond this period. While refrigeration is not required, storing in a fridge can help prolong stability.
Each container is labelled with a batch number and expiry date for traceability and quality assurance.
If you need to cancel or edit your order (e.g., change item, adjust quantity, update address), please contact moc.sbalelcsumxamobfsctd@troppus as soon as possible.
If the order hasn’t shipped yet - we’ll edit or cancel it immediately.
If the order has already been dispatched - we can’t make changes.
Once shipped, our returns/refunds policy applies (see above for details).
We don’t use a self-service subscription portal for compliance reasons. Instead, our support team handles all subscription changes manually - quickly and reliably.
You can request adjustments to:
Subscription frequency
Delivery address
Payment details
Pausing or cancelling
Simply email moc.sbalelcsumxamobfsctd@troppus and we’ll update your subscription, usually within a few hours.
Our subscription discounts are standalone offers and cannot be combined with other promotions, coupon codes, or bulk discounts.
This ensures subscription customers always receive a consistent discount rate while keeping our pricing transparent and fair.
Generally we don’t accept returns. However, we do make exceptions in the following cases:
Damaged item
Incorrect item received
Unsatisfactory product experience
If your research compound didn’t meet expectations, you’re covered by our 60-day satisfaction guarantee. In these cases, you may be required to return the item (even opened), and we’ll refund you in full.
To request a return or refund, contact moc.sbalelcsumxamobfsctd@troppus - each case is handled individually and fairly.
We stand behind the quality of our products. If the product didn’t meet your research expectations - you have 60 days from the purchase date to request a refund .
To qualify:
The product must be returned (even if opened).
You must explain the issue so we can investigate and improve.
Refunds are processed after the returned item is reviewed.
In rare cases (e.g. damaged parcel, seized by customs), we may also replace your order or refund without requiring return. We evaluate each case individually — just contact our support team at moc.sbalelcsumxamobfsctd@troppus
Discover the history and science behind SARMsin our series of articles:
SARMs Law Update: Where Are We in 2025?
Are SARMs legal in 2025? The short answer: not really. In the U.S., the FDA calls them ‘unapproved drugs’ and is prosecuting companies that sell them as supplements. In the …
What is Ostarine (MK-2866)? A Complete Guide for UK Researchers in 2025
Ostarine (MK-2866): What Researchers Need to Know 1. Overview Ostarine — often referred to as MK-2866 or Enobosarm — is a Selective Androgen Receptor Modulator (SARM) developed by GTx, Inc. …
Are SARMs Legal to Buy in the UK for Research Purposes?
1. Current Legal Status In the UK, SARMs (Selective Androgen Receptor Modulators) are not licensed medicines. The MHRA (Medicines and Healthcare products Regulatory Agency) has never approved them for human …
The Role of HPLC in SARMs Testing
The gold standard for verifying compound purity, safety, and identity. When it comes to SARMs, labelling isn’t enough — you need data. That’s where HPLC comes in. High-Performance Liquid Chromatography …
How to find the best company for SARMS in the UK
10 Steps That Actually Matter Let’s be honest: The SARMs market is flooded with bold claims, sketchy suppliers, and zero accountability. So how do you cut through the noise and …
Role of Nonsteroidal Antiandrogens in SARMs Development
Introduction: Nonsteroidal antiandrogens have played a foundational role in the development of selective androgen receptor modulators (SARMs). These compounds, which block the androgen receptor without a steroidal structure, provided early proof …