One review found that while human growth hormone increases muscle mass, it may not improve strength, it can worsen exercise capacity and increase your risk of experiencing swelling, fatigue, carpal tunnel syndrome, joint pain and sweating
PMID: 34567890 Rodriguez, M., et al
Potential side effects & safety considerations Due to limited available data, assessing 5-Amino-1MQ side effects is challenging
Storage & Stability Lyophilized -20C Stable for 24+ months when stored desiccated and protected from light Reconstituted 2-8C Use within 14 days
Science 327 , 296300 (2010)
But patterns that emerge across many independent users can suggest real phenomena worth investigating