Interestingly, gastrointestinal symptoms were significantly reduced for the IF2-P group but not for the IF1-P group
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Even if the solution appears clear, peptide bond hydrolysis and oxidation have likely reduced bioavailability by 1530%, compromising experimental consistency
A peptide that hasn't been verified for identity and purity via third-party testing isn't a controlled variable it's an unknown, and no amount of protocol precision fixes that
A 2012 Cochrane review of GH supplementation and exercise in healthy older adults (12 RCTs, N=220) found that GH alone increased lean mass by 2.1 kg but did not improve muscle strength