Epithalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) based on a naturally occurring short-chain bioregulatory peptide
Self-injectable peptides or topical cream, no clinic visits after enrollment, no pharmacy lines
Lih-Brody L, Powell SR, Collier KP, Reddy GM, Kahn E, Weissman GS, Katz S, Floyd RA, McKinley MJ, Fisher SE, and Mullin GE (1996)
The effectiveness of oral supplements is often limited because of digestive barriers, while IV delivery offers a more predictable response for those dealing with chronic inflammation, oxidative stress, or a longstanding need for detoxification support
REFERENCIAS: J Nutr
But I think some brands, and if you look at ConsumerLab, ConsumerLab, it's like a third-party site that I'm not affiliated with, but I'll use them because they do a lot of analysis of different foods and supplements