What is the difference between IGF-1 and IGF-1 LR3?

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IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a modified version of natural IGF-1, the main difference between regular IGF-1 and IGF-1 LR3 is their molecular structure. Regular IGF-1 is made up of 70 amino acids, while IGF-1 LR3 has 83 amino acids due to the addition of 13 amino acids to its N-terminus. This is designed to enhance its effectiveness and stability in the body. This significantly increases its half-life and bioavailability. This modification allows IGF-1 LR3 to remain active in the body for a longer period of time compared to regular IGF-1, making it more effective in stimulating anabolic processes such as muscle growth and repair.

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