in vitro and animal studies have linked thymosin beta-4 overexpression to increased tumor size and metastasis in several cancer types (including colorectal and pancreatic cancer), leading researchers to flag a theoretical cancer-promotion risk, particularly for anyone with an active malignancy or recent cancer history Self-reported effects compiled from user and case reports, not controlled trials, include injection-site redness or itching, transient fatigue, and headache
As highlighted in this review, the relationships between marker variations and biological compartments were often obscured by uneven consideration of fundamental variables such as disease stage, symptoms, treatments, and menstrual cycle phase
Some clinical studies have found that GHK-Cu-based creams produced results comparable to vitamin C and retinoids, without causing irritation
The peptide is establishing activity at the receptor level
Khavinson VK, et al