Citrulline is an amino acid that is not found in muscle-building proteins, but plays a key role in a number of metabolic processes that affect our health, physical performance and recovery after exercise. It occurs naturally in products such as watermelon, but its supplementation in the form of high-quality formulations produces much more intense and targeted effects.

Citrulline's main function is to increase the production of nitric oxide (NO) in the body. Nitric oxide is a key signaling molecule that dilates blood vessels, increasing blood flow to muscles. As a result, more oxygen and nutrients are delivered, which not only increases training efficiency, but also intensifies the effect of the so-called “muscle pump” - the feeling of muscle fullness that accompanies intense training sessions.