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IGF-1 LR3 (Long R3 Insulin-like Growth Factor-I) is a potent, long-acting analog of human IGF-1 designed to enhance muscle growth, accelerate tissue repair, and improve body composition. It stimulates muscle cell proliferation, prevents muscle atrophy, boosts bone density, and increases strength. It is often used to maximize performance and recovery. 

Mechano Growth Factor (MGF), or IGF-1Ec, is a potent splice variant of IGF-1 that acts as a localized growth factor to induce rapid muscle hypertrophy, repair damaged tissues, and stimulate satellite cell activation. It significantly enhances muscle regeneration, increases muscle fiber cross-sectional area, and aids in recovery from intense, eccentric exercise. 

IGF-1 DES (1-3) is a truncated, highly potent analog of Insulin-like Growth Factor-1 that promotes rapid muscle hypertrophy, accelerated tissue repair, and fat loss. Its primary advantage is superior binding affinity to receptors in damaged tissues, making it 5-10 times more potent than standard IGF-1 for localized muscle growth, recovery, and hypertrophy.