Sleep improvements typically appear within 2-4 weeks, while body composition and performance changes develop over 2-3 months, with continued optimization through 6 months
Not all drugs in a given class are described in the following paragraphs, only representative examples and their modes of action
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Some of the most common classes include: Hormonal peptides like Tesamorelin or GH-releasing peptides , which regulate growth hormone output Repair peptides like BPC-157 and TB-500 , which aid in tissue regeneration and wound healing Metabolic peptides such as CJC-1295 or GLP-1 analogs , which influence fat loss and insulin response Muscle-building peptides including IGF-1 LR3 and PEG-MGF , which promote hypertrophy and muscle recovery Peptides function as highly specific signaling molecules in the endocrine, nervous, and immune systems and their therapeutic potential continues to grow. Craik et al., Chemical Biology & Drug Design Are Peptides Natural or Synthetic
Group I n = 23, group II n = 36