Mesterolone 25mg tablets
Mesterolone is a synthetic anabolic-androgenic steroid (AAS) and derivative of dihydrotestosterone (DHT).
Minimal controls; includes benzodiazepines and anabolic steroids
Legal requirements and restrictions
Anabolic steroids and related substances. Possession for personal use is not an offence, but supply is controlled.
Legal requirements
- Prescriptions valid for 28 days
- No controlled drugs register required
- No safe custody requirements
- Import/export restrictions apply
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Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
Safety monitoring data
Yellow Card reports
The MHRA Yellow Card scheme collects reports of suspected side effects from healthcare professionals and patients. View the Drug Analysis Profile (iDAP) for real-world adverse reaction data.
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Suspected adverse reactions reported for Mesterolone
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Report a side effect
Submit a Yellow Card report to the MHRA
Data from the MHRA Yellow Card scheme. A reported reaction does not necessarily mean the medicine caused it. Contains public sector information licensed under the Open Government Licence v3.0.
EudraVigilance
The European Medicines Agency (EMA) collects suspected adverse reaction reports from across the EU/EEA through the EudraVigilance system. Search for safety data on this medicine.
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Suspected adverse reactions reported for Mesterolone
About EudraVigilance
Learn about EU pharmacovigilance and safety monitoring
EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
2 branded products available
WHO defined daily dose (DDD)
50 mg
Not a recommended dose. The DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults. It is a statistical measure used for research and comparison purposes only.
Source: WHO Collaborating Centre for Drug Statistics Methodology, distributed via the NHS dm+d supplementary BNF/ATC mapping files (NHSBSA). Contains public sector information licensed under the Open Government Licence v3.0.
Therapeutically similar medicines
Similarity is based on WHO Anatomical Therapeutic Chemical (ATC) classification and on a factual NHS dm+d therapeutic-grouping code prefix. Source data: NHS dm+d via TRUD (OGL v3.0), WHO ATC/DDD Index.
NHS prescribing volume and spending trends
Check stock at pharmacies and supply information
Pharmacy stock checkers
Search for this medicine at major UK pharmacy chains. These links open the retailer's own website — results depend on their current online catalogue.
Supply & safety information
Official UK regulator monitoring and safety alerts
Pharmacy links redirect to the retailer's own search and do not represent real-time stock levels. Shortage and safety information sourced from MHRA drug safety updates (gov.uk, Crown Copyright under OGL v3.0).
Codes for healthcare professionals and prescribing systems
These codes are used by healthcare IT systems and prescribers to identify this medicine.
NHS UK identifiers
Browse tools
SNOMED CT and dm+d codes from NHS TRUD (Technology Reference data Update Distribution), licensed under the Open Government Licence v3.0. BNF code shown is the factual mapping value distributed by NHS Business Services Authority (NHSBSA) in the dm+d supplementary file under OGL v3.0; it is not affiliated with, nor licensed from, the publishers of the British National Formulary. ATC codes from the WHO Collaborating Centre for Drug Statistics Methodology (whocc.no).
Active and completed clinical studies from ClinicalTrials.gov
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine (NLM), National Institutes of Health (NIH). Data accessed via ClinicalTrials.gov API v2. Trial information is provided for research purposes and does not constitute medical advice.
Academic studies and reviews for this medicine's active substance
Showing the 50 most relevant studies.
Randomised trials: 1 · 1966–2025
Showing the 50 most relevant studies, sorted by most relevant.
T. B. Hargreave, K. F. KYLE, K. Baxby, et al.
British Journal of Urology, 1984
- Ascorbic Acid
- Clinical Trials as Topic
- Infertility, Male
Christina Wang, Chi-Wing Chan, Kwok-Kee Wong, et al.
Fertility and Sterility, 1983
- Clomiphene
- Follicle Stimulating Hormone
- Mesterolone
M. Luisi, F. Franchi
Journal of Endocrinological Investigation, 1980
- Clinical Trials as Topic
- Ejaculation
- Hypogonadism
Yiannis S. Angelis, Argyro G. Fragkaki, Polyxeni Kiousi, et al.
Drug Testing and Analysis, 2023
- Mesterolone
- Methenolone
- Betaine
Aðalheiður Dóra Albertsdóttir, Wim Van Gansbeke, Peter Van Eenoo, et al.
Drug Testing and Analysis, 2023
- Doping in Sports
- Anabolic Agents
- Anabolic Androgenic Steroids
Pascal Kintz, Laurie Gheddar
Drug Testing and Analysis, 2024
Ambreen Aziz, Atia-tul-Wahab, Mahwish Siddiqui, et al.
Steroids, 2023
- Phyllachorales
- Mesterolone
- Testosterone Congeners
Iraní Silva de Morais, Vanessa R. Reis, Gabriela B. de Souza, et al.
Aquaculture, 2024
Alshaimaa Morsi, Maha Abdul Rahman, Amira Abdelaal Ahmed, et al.
Egyptian Society of Clinical Toxicology Journal, 2025
Oxford English Dictionary, 2023
Sources: aggregated from Europe PMC (EMBL-EBI), OpenAlex, Crossref, PubMed and other open scholarly databases. Retracted articles are excluded. Study information is provided for research purposes and does not constitute medical advice.
Pharmacology and chemical data from DrugBank
Key facts
Drug status
Investigational
Major interactions
None known
Half-life
Not available
Mechanism
Not available
Food interactions
None known
Human targets
None mapped
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 172 interactions
ATC G03BB01
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
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Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Linked compound data from DrugBank Open Data (CC BY-NC 4.0)
Mesterolone
DrugBank citations
If you use DrugBank data in your research, please cite the following publications:
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Structured knowledge from the free knowledge base
ATC classifications (Wikidata)
Linked open data from Wikidata (Q4291328), a free and open knowledge base operated by the Wikimedia Foundation. Data is available under the Creative Commons CC0 1.0 Public Domain Dedication.