For GLP-1-focused probiotics specifically, some suggest taking them before meals might theoretically align with enhancing postprandial GLP-1 secretion, though this remains speculative and is not supported by clinical outcome data
Topical GHK-Cu is generally well tolerated, but some people may experience mild scalp irritation, redness, itching, or contact dermatitis
Randomised, double-blind, placebo-controlled dose-escalation studies show that CJC-1295 produces sustained, dose-dependent increases in growth hormone and IGF-1, lasting several days after subcutaneous administration.[18] Ipamorelin has published human pharmacokinetic and pharmacodynamic data,[19] and has undergone a randomised phase-II study for postoperative ileus after bowel surgery.[20] But endocrine activity is not a dermatological outcome
Sermorelin was the first generation of these pituitary-stimulating peptides to see wide clinical use, and it has a longer track record than most
PMID: 26960445
It has been shown to increase power output and training capacity