Mesterolone – Proviron

Mesterolone, sold as Proviron, is an oral DHT-derived compound rather than a true anabolic mass builder. It binds strongly to SHBG, which frees up more active testosterone in the bloodstream, and it also gives a harder, drier look to the physique. Because it is a DHT derivative it does not convert to oestrogen, so it will not cause the water retention or gyno risk seen with aromatising compounds.

Each tablet contains 25mg mesterolone, and most protocols run 25mg twice daily (50mg per day) taken with food, for around 8 to 12 weeks. Many users start with just 25mg for the first few days to check tolerance before moving up to the full dose. This is general usage information, not medical advice, and any protocol should be discussed with a doctor first.

No aromatase inhibitor is needed since mesterolone is non-aromatising and does not raise oestrogen. It does still suppress natural testosterone production to some degree, so PCT is still recommended, typically clomiphene 50mg daily or tamoxifen 20mg daily for 4 weeks starting about 2 weeks after the last dose. Baseline and mid-cycle bloodwork covering liver enzymes (ALT, AST), lipids (particularly HDL) and testosterone is a sensible precaution.

Mesterolone carries less liver strain than 17-alpha-alkylated orals since it is not methylated in that way, but it can still lower HDL cholesterol and suppress natural testosterone output. Androgenic side effects such as acne, hair loss, or increased body hair can appear in people prone to them. Anyone with existing liver, cardiovascular, or hormonal concerns should speak to a doctor before starting.

Both are DHT derivatives prized for a hard, dry look, but they work differently. Masteron is injectable and carries genuine anabolic activity of its own, while Proviron is oral and acts mainly through SHBG binding, freeing up testosterone rather than adding much mass directly. Many users combine Proviron with an injectable base like testosterone rather than using it as a standalone compound.

Every box of this Syncom Labs Proviron carries a verification check-code so you can confirm it against genuine stock before use. Orders are dispatched from the UK on Royal Mail Tracked 24 in plain, discreet packaging, with most UK orders arriving in 1 to 2 working days. Place your order before noon on a working day and it goes out same day.