Primobolan tablets are a moderate anabolic and low androgenic oral steroid. When taken alone or in light dosages the steroid primoblan is known to not be very effective. Gains made in muscle mass and strength are thought to be high quality and retained well after a cycle.

Acetates are thought to aid in fat burning, so primobolan is mostly used in a stack pre-contest.
Primobolan is not a c17 alfa alkylated steroid, so its mostly deactivated during the
first pass through the liver (oral anabolic steroids are commonly modified to decrease liver deactivation. The most common steroid modification is c17 alfa alkylation. This modification causes the liver to work extra hard to deactivate it and is said to be highly liver toxic. Another change in structure allows Primobolan steroid orals to be fairly resistant to liver deactivation. Its known as unsaturation in the 1 position. This change allows the steroid to resist
metabolic deactivation by significantly shifting the 17 Keto redox towards creation of active 17 beta hydroxyl steroid. This creates an active oral steroid that is not thought to be as liver toxic except in high dosages.