Mesterolone Hilma Biocare

Mesterolone by Hilma Biocare, sold under the brand name Proviron, is a versatile oral androgen valued for two things at once: mild anti-estrogenic action and the ability to amplify the androgenic effect of the rest of a cycle. By binding SHBG it frees up more active testosterone, hardening the physique and lifting libido, while its DHT structure means it never aromatizes. It is a support compound rather than a mass builder, which is why it appears in so many stacks.
| Active substance | Mesterolone (Proviron) |
| Manufacturer | Hilma Biocare |
| Form | Oral tablets |
| Typical dosage | 25–75 mg per day |
| Class | Oral DHT-derived androgen |
| Focus | Anti-estrogenic support, hardness, libido |
Effects and benefits
Mesterolone helps manage estrogen indirectly and raises free testosterone by tying up SHBG, which sharpens muscle definition and improves the overall look of a cycle. It is also one of the most reliable compounds for restoring libido and drive when other steroids blunt them.
- Mild anti-estrogenic effect
- Raises free, active testosterone
- Improves muscle hardness and definition
- Restores libido and sexual performance
Dosage and administration
Most users run 25–75 mg per day as an add-on to a main cycle rather than on its own. Compare it with the rest of the oral steroids range when planning a cutting or support block.
Stacking and combinations
It works best beside a testosterone base such as Testosterone Propionate and a hardener like Stanozolol, where its SHBG-binding action amplifies the free hormone in the whole stack.
Why choose Hilma Biocare
Every batch is produced to consistent pharmaceutical standards with dependable dosing you can trust. Explore the complete Hilma Biocare catalogue to assemble a matching stack.
| Characteristics | |
| Shelf Life | 36 months from manufacture date |
| Drug Class | Anabolic/Androgenic Steroid |
| Concentration | Typically 25 mg per tablet |
| Half-Life | Approximately 12 hours |
| Detection Time | Up to 5-6 weeks |
| Anabolic Index | 100-150 |
| Androgenic Index | 30-40 |
| Estrogen Level | None |
| Active Substance | Mesterolone |
| Aromatization | None |
| Dosage | 25-100 mg per day |
| Drug Category | Anabolic Steroids |
| Form | Oral tablets |
| Product Packaging | 100 tablets |
| Water Retention | None |
| Progestational Activity | None |
| Liver Toxicity | Low |
| Chemical Structure | C20H32O2 |
