Mesterolone, commonly sold under the brand name Proviron, is a synthetic androgenic steroid with a relatively weak anabolic effect. It’s often used in medical settings to treat various conditions, such as low testosterone levels (hypogonadism) and infertility. Mesterolone is available in oral tablet form, with the most common dosage being 25 mg tablets.
 
Here are some key points about Mesterolone (Proviron):
 
Androgenic Effects: Mesterolone has a predominantly androgenic effect, meaning it interacts with androgen receptors in the body. It can help to improve androgen-deficient symptoms, such as low libido and energy, that may arise due to inadequate testosterone levels.
Anti-Estrogenic Effects: One of the unique characteristics of Mesterolone is its ability to act as a mild aromatase inhibitor. This means it can help prevent the conversion of testosterone to estrogen, which is especially useful during anabolic steroid cycles when excess estrogen could lead to unwanted side effects like water retention and gynecomastia.
Muscle Hardness and Vascularity: Some bodybuilders and athletes use Mesterolone during contest preparation due to its reported ability to enhance muscle hardness and vascularity, leading to a more defined and “dry” appearance.
Low Anabolic Activity: While Mesterolone has some anabolic properties, they are relatively weak compared to other anabolic steroids. It is not typically used as a primary compound for muscle growth.
Minimal Suppression: Mesterolone is known to have minimal impact on the body’s natural testosterone production, which can make it an attractive option for use between anabolic steroid cycles to help maintain libido and overall well-being.
Side Effects: As with any medication, Mesterolone can have potential side effects. These can include changes in mood, acne, oily skin, and, in rare cases, more severe effects on the liver or cardiovascular system.
Prescription Only: Mesterolone is a prescription medication, and its use should always be under the guidance of a medical professional. Self-administering any form of androgenic steroid without medical supervision can be risky and might lead to unintended health consequences.
 
It’s important to stress that the use of Mesterolone or any other anabolic or androgenic steroid should be discussed with a qualified healthcare provider. The potential benefits and risks, as well as the legal and ethical considerations, should all be thoroughly evaluated before making a decision.