Every peptide, graded by the evidence behind it.

Glutathione (GSH) is a tripeptide composed of glutamine, cysteine, and glycine, recognized as the body's primary intracellular antioxidant. It plays a critical role in maintaining redox balance, detoxifying harmful compounds, and supporting immune function. GSH is also involved in various cellular processes, including the regulation of cell proliferation and apoptosis, making it essential for overall cellular health and function.

Semaglutide is a synthetic analog of glucagon-like peptide-1 (GLP-1), a hormone involved in glucose metabolism and appetite regulation. As a GLP-1 receptor agonist, semaglutide enhances insulin secretion in response to elevated blood glucose levels, suppresses glucagon secretion, and slows gastric emptying, leading to improved glycemic control. Additionally, it promotes satiety, contributing to weight loss, which has made it a focus of research for managing both type 2 diabetes and obesity.

NAD+ (Nicotinamide adenine dinucleotide) is a crucial coenzyme involved in various metabolic processes, including energy production and cellular repair mechanisms. Recent research highlights its potential roles in protecting against oxidative stress and enhancing therapeutic efficacy in certain cancer treatments.

LL-37 is a human cathelicidin antimicrobial peptide that plays a significant role in the innate immune response. It exhibits a range of biological activities, including antimicrobial, immunomodulatory, and wound healing properties. LL-37 is produced by various cells, including epithelial cells and neutrophils, and is known to interact with a variety of pathogens, including bacteria, viruses, and fungi.

Copper-binding tripeptide widely used in skin, hair, and wound-healing contexts, with systemic effects explored in research.

HGH (somatropin) is recombinant human growth hormone, FDA-approved for pediatric and adult GH deficiency and several wasting and short-stature conditions; widely studied for body composition off-label.