Each vial contains 1mg of highly pure IGF-1 LR3.

IGF-1 LR3 (Insulin-like Growth Factor 1 Long Arg3) is a synthetic derivative of IGF-1, a naturally occurring protein involved in growth, development, and cellular repair. While it closely resembles the body’s own IGF-1, it has been structurally modified with an arginine substitution at position 3. This change extends its half-life, allowing it to remain active in the bloodstream for longer periods of time.

As a result, IGF-1 LR3 exerts prolonged biological effects, supporting processes such as muscle growth, fat metabolism, and tissue recovery. Its ability to enhance cellular repair and regeneration has made it a compound of interest in performance, recovery, and longevity research.