SARMS UK – Research Grade
Buy SARMs made in the UK – Research-Grade Compounds, β₯99% HPLC
SARMS UK – Research Grade
SARMs (Selective Androgen Receptor Modulators) are synthetic compounds designed to bind selectively to androgen receptors in the body.
Unlike anabolic steroids, which activate receptors throughout many tissues, SARMs target specific areas – primarily muscle and bone – while avoiding others like the prostate or liver. Ostarine is prime example of this class.
This selective action allows researchers to explore anabolic effects (such as increased muscle mass or bone density) with reduced systemic side effects. SARMs are commonly studied in contexts like muscle wasting, osteoporosis, and hormonal regulation, but they remain investigational and are not approved for human consumption.
Moving in 2026 – new information available
- Where to start: SARMs glossary
- Need to check the law? SARMs law update for 2026
- Check out our Buying Guide
| Compound | Receptor Selectivity | Typical Research Range* | Half-Life | Key Research Observations | Distinctive Features |
|---|---|---|---|---|---|
| Ostarine (MK-2866) | High AR affinity (muscle/bone) | 1-3 mg/day | ~24 hours | Frequently analysed for lean mass and musculoskeletal studies | Most studied SARM in published literature |
| Ligandrol (LGD-4033) | Potent AR binding | 0.1-1 mg/day | ~24-36 hours | Phase I/II trials on strength and mass | Higher AR affinity vs MK-2866 |
| RAD-140 (Testolone) | Very high AR selectivity | 0.1-1 mg/day | ~16-24 hours | Explored for neuroprotection and bone effects | Strongest AR agonist in SARM category |
| Andarine (S-4) | Moderate AR selectivity | 25-50 mg/day | ~3-6 hours | Examined for muscle/bone pathways | Short half-life, often divided in studies |
| ACP-105 | Potent AR activation | 1-10 mg/day | ~4-6 hours | Strong signalling effects in rodent studies | Often compared to RAD-140 |
| S23 | Very strong AR selectivity | 0.5-5 mg/day | ~11-12 hours | Studied for male contraception models | Extremely potent; narrow research applications |
| YK-11 | Partial AR agonist (myostatin modulation) | 1-10 mg/day | ~6 hours* | Mostly in vitro/in vivo data | Hybrid steroidal-SARM mechanism |
| MK-677 (Ibutamoren)β | GH secretagogue (not a SARM) | 5-25 mg/day | ~6 hours | GH/IGF-1 axis signalling and sleep studies | Oral GH secretagogue |
| SR9009β | REV-ERB agonist (not a SARM) | 20-30 mg/day | ~2-4 hours | Circadian and metabolic research | Mechanistically unrelated to AR pathways |
*Research ranges reference published experimental literature β not guidance for human consumption.
β Not a SARM; included due to common comparison in research discussions.
Testing procedures
Third-Party Testing Every Batch, No Exceptions
Every compound we supply comes with a batch-specific Certificate of Analysis (COA) from an accredited third-party lab. We use validated methods like HPLC and LC-MS/MS to confirm:
- Compound identity Purity (β₯98%)
- Absence of contaminants or adulterants
Professional Grade Packaging and Fulfilment
Weβve designed every step of the process to protect compound integrity and researcher confidence.
- Sealed, tamper-evident containers
- Discreet, trackable delivery (Royal Mail, DPD)
- Same-day dispatch on weekdays for most orders
UK Legislation Compliance
Safety handling compliance
Our SARMs are shipped with physical copies of the Material Safety Datasheet, and are labelled with the specific hazard classification for each compound.
Research supply only
We only supply our compounds to those involved in the research and development industry. Checks are undertaken to ensure correct possession and usage of our compounds
Next day UK SARMS delivery & effective customs clearance
Royal Mail 24
We aim to ship stocked items within 24 hours of ordering, Monday to Friday
Customs Clearance
We have extensive experience in working with international customs to ensure the correct assessment and hassle-free import for your order
How We Maintain REACH Compliance for SARMs
Stock threshold control
We supply in small batches for laboratory use, well below the 1-tonne annual threshold that triggers mandatory REACH registration. This means formal registration is not currently required – but other obligations still apply.
Safe Handling, Packaging & Labelling
We ensure all research compounds are: Labeled with appropriate hazard warnings (GHS/CLP-compliant) Supplied with SDS (Safety Data Sheets) where applicable Packaged in a way that prevents leakage, degradation, or contamination
FAQ
Are SARMs legal in the UK?
SARMs are not licensed for general sale and must not be marketed for human consumption in the UK. However, they are legal to purchase and possess for legitimate laboratory and research purposes when supplied by registered research-chemical vendors. We do not provide legal advice and recommend that customers check the regulations in their own jurisdiction before ordering.
Are SARMs the same as anabolic steroids?
No. Both interact with androgen receptors, but anabolic steroids are testosterone-derived compounds with broad systemic effects. SARMs are non-steroidal molecules engineered for tissue selectivity (primarily muscle and bone), which distinguishes them chemically, mechanically, and in terms of side-effect profile.
What purity do your SARMs have?
All our SARMs are independently verified atΒ β₯99% purityΒ via third-party HPLC analysis. Every batch comes with a Certificate of Analysis (COA), so you can verify what’s in every compound before you order.
How fast is UK delivery?
Royal Mail Tracked 24 typically arrives within 1 working days from dispatch.
Do you ship internationally?
International orders are shipped via Royal Mail International Tracked and typically arrive within 3-5 working days,Β excludingΒ customs processing time. Customs clearance times vary by country and can range from 1 day to 3 weeks, although in most cases parcels are processed more quickly.
What COA / HPLC documentation do you provide?
Every batch comes with a COA from ARCHEM and an independent HPLC report from a third-party lab. These documents are included as product inserts in every parcel (this applies only to UK orders). All testing documentation is also available on the corresponding product page andΒ Quality ControlΒ page.
Can I buy SARMs for human consumption?
Our SARMs are sold strictly as research chemicals, not for human consumption. They are not approved by the FDA or equivalent regulatory bodies for medicinal or dietary use. By purchasing, you confirm that products are intended for laboratory and research purposes only. Please ensure compliance with the laws and regulations in your jurisdiction before ordering.
What payment methods do you accept?
We accept all major debit and credit cards (Visa, Mastercard, American Express) as well as Apple Pay and Google Pay β all processed securely via Stripe. We also accept PayPal. If youβd like to pay by bank transfer or cryptocurrency, please emailΒ support@maxmusclelabs.comΒ and weβll do our best to accommodate you.
What’s your return policy?
You may return eligible products within 14 days of delivery, provided the item is unopened, unused, and in its original sealed condition. Items that have been opened or show signs of tampering cannot be returned for safety and quality-control reasons.
Are SARMs detectable on drug tests?
It depends on the test. Standard workplace or clinical drug panels do not screen for SARMs. However, sports anti-doping tests do – WADA has listed SARMs as prohibited substances since 2008, and accredited labs detect them via LC-MS/MS analysis, often identifying metabolites weeks after the last dose. If you are subject to athletic drug testing, assume SARMs are detectable.
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