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Carefully curated scientific guides and research insights, reviewed for accuracy, clarity and evidence-based consistency.

Scientific Guide Trusted Evidence Reviewed

Published October 09, 2026

Are SARMs Legal in the UK? 2026 Guide: MHRA, FSA, UKAD

Are SARMs legal in the UK? No UK statute names selective androgen receptor modulators and bans them outright, but three sets of rules decide what can lawfully be done with them: medicines law, food law and the anti-doping code. This 2026 guide quotes the pr...

Scientific Guide Trusted Evidence Reviewed

Published October 09, 2026

Muscle Market Brands Compared: Thoroughbred Labs, Yakka Strength, BioLab, iMuscle

Muscle Market is the part of the Free Muscle catalogue that stocks research compounds from other brands alongside our own. Four of those brands are compared here: Thoroughbred Labs, Yakka Strength, BioLab and iMuscle. The comparison uses store data only: th...

Scientific Guide Trusted Evidence Reviewed

Published October 09, 2026

BPC-157 vs TB-500: What the Studies Compared

BPC-157 and TB-500 are the two peptides most often compared by people reading about tissue repair research, and they are often described as if the evidence for them were the same. It is not. This guide sets out, study by study, what was actually tested for ...

Scientific Guide Trusted Evidence Reviewed

Published October 09, 2026

Retatrutide in the UK 2026: Licensing Status and Trials

Retatrutide (LY3437943) is an investigational peptide developed by Eli Lilly that acts at three receptors at once: the glucose-dependent insulinotropic polypeptide (GIP) receptor, the glucagon-like peptide-1 (GLP-1) receptor and the glucagon receptor. In 20...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

MK-677 side effects reported in human trials, study by study

MK-677 side effects reported in human trials include raised fasting glucose, lower insulin sensitivity, increased appetite, lower-limb oedema and muscle pain, and one hip-fracture trial was stopped early over a congestive heart failure signal. MK-677, also ...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

Is MK-677 (Ibutamoren) legal in the UK? Law, lab testing and how orders work

Can you buy ibutamoren in the UK? The short answer is that Free Muscle sells it for laboratory research use only, to customers aged 18 or over, and that the legal position has to be pieced together from several laws rather than one label. This ibutamoren UK...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

RAD-140 results and side effects: what cell, animal and human studies measured

What does RAD-140 do? The published studies do not establish what RAD-140 does in people: results in rats and mice conflict, and the one human trial, a phase 1 study in 22 women with advanced breast cancer, reported raised liver enzymes as the most common a...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

Is RAD-140 legal in the UK? What UKAD, WADA and the regulations say

Is RAD-140 legal in the UK? According to UKAD, no SARM has been approved by any medicines or food regulator for human use and any sale of these products for human consumption is illegal, and RAD-140 is on the WADA Prohibited List at all times (S1.2); whethe...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

Cardarine cancer risk across rodent studies, mouse models and human trials

The sources do not show that cardarine causes cancer in people, but, according to a review, the developer stopped work after rodent studies were linked to tumour development, academic mouse studies reported enhanced tumour formation in some colorectal and p...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

Cardarine UK law: what medicines regulations and anti-doping rules cover

The short answer on cardarine UK law is that it turns on a legal judgement under the Human Medicines Regulations 2012, which prohibit selling or supplying an unauthorised medicinal product, and that in sport the position is clearer: WADA added GW-501516, th...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

YK-11 results so far: cells, rats and horses, and no human trial

We found no human trial behind any published YK-11 result. YK-11 is a laboratory-made steroid that scientists have described as a selective androgen receptor modulator, or SARM, and every published result we found comes from cell cultures, from rats and mic...

Scientific Guide Trusted Evidence Reviewed

Published October 03, 2026

YK-11 UK law vs WADA rules: two different questions

People searching for "YK-11 UK" are usually asking two different questions that often get run together. The first is a question of UK law: where does the compound stand under UK medicines and novel foods legislation? The second is a question of sport: what ...

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Research Hub

Are SARMs Legal in the UK? 2026 Guide: MHRA, FSA, UKAD

Muscle Market Brands Compared: Thoroughbred Labs, Yakka Strength, BioLab, iMuscle

BPC-157 vs TB-500: What the Studies Compared

Retatrutide in the UK 2026: Licensing Status and Trials

MK-677 side effects reported in human trials, study by study

Is MK-677 (Ibutamoren) legal in the UK? Law, lab testing and how orders work

RAD-140 results and side effects: what cell, animal and human studies measured

Is RAD-140 legal in the UK? What UKAD, WADA and the regulations say

Cardarine cancer risk across rodent studies, mouse models and human trials

Cardarine UK law: what medicines regulations and anti-doping rules cover

YK-11 results so far: cells, rats and horses, and no human trial

YK-11 UK law vs WADA rules: two different questions

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