testolone · vosilasarm
A SARM still being studied. No such medicine exists.
This site is for information and education only. It does not promote or encourage the use or purchase of the substances described and is not medical advice. Many are not authorised as medicines and their safety has not been established. We sell nothing and have no ties to sellers. For health decisions, consult a doctor.
Safety. A case report describes liver damage with blocked bile flow in a 24-year-old man after 5 weeks of use. Sources: study 1.
Risk of fakes. These tests cover products sold as SARMs and do not name RAD-140. Of 44 products, 52% held any SARM and 41% matched the label. Sources: study 1, study 2.
| Where | Status | Checked | |
|---|---|---|---|
| PL | No approval | No approval found. The Polish sanitary inspectorate lists SARMs as not allowed in food supplements. Source | Not yet |
| EU | No approval | The European medicines database (EMA), which covers EU and national approvals, lists no such medicine (9 October 2026). Source | Not yet |
| US | No approval | The FDA drug register has no such medicine. Source | Not yet |
Scientific papers per year 2015–2025
These are search results. A count shows how much exists, not how good the studies are. 1 Nov 2026.
Conflicting results. Animal studies only. In young rats muscle fibres grew thicker. In female mice strength did not rise after 10 weeks and overall health got worse. The only study in people was in breast cancer and did not measure muscle.
No effect in studies. One study in female mice: after 10 weeks strength did not differ from the control group, and the mice were frailer and more likely to die.
What doctors, patients and companies reported to the US medicines agency (FDA), and single cases described in medical journals. A report says what happened to someone after taking the substance. It does not prove the substance caused it, and it does not say how often it happens. Reports do not change any grade.
| Most often reported | Reports |
|---|---|
| Kidney tissue death from blocked blood | 5 |
| Spleen tissue death from blocked blood | 5 |
| Blood clot in an artery | 4 |
| Blood clot in the aorta | 3 |
| Liver damage caused by a substance | 3 |
| Stomach pain | 2 |
| Blocked bile flow | 2 |
| High blood pressure | 2 |
Serious means the person went to hospital, their life was in danger, they were left with lasting harm, or they died. One report can list several side effects.
FDA reports come from openFDA, cases from a PubMed search. The editors have not read these cases yet. Titles stay in the original language. As of 3 Nov 2026.
A urologist who works on men's health goes through the studies on popular SARMs, MK-677 and cardarine: muscle gain, lower testosterone, the liver, cholesterol, fertility and false labels. According to the description, every SARM gets the lowest rating at the end.
| Studies | Kind of study | Who was studied | People | Duration | Dose as studied | Who paid |
|---|---|---|---|---|---|---|
| Preclinical assessment of the selective androgen receptor modulator RAD140 to increase muscle mass and bone mineral density. | In animals | rats, Young male rats, plantaris muscle overload or none | 40 | 2 wk | – | Unknown |
| RAD140 (Testolone) negatively impacts skeletal muscle adaptation, frailty status and mortality risk in female mice. | In animals | mice, Young and adult female mice | – | 10 wk | 5 mg/kg | Unknown |
We found these papers automatically in PubMed. The editors have not read them yet, and they do not affect any grade. Titles stay in the original language.
