Firstly the Review was based on research papers that were very suspect and involved groups of individuals that did not represent a wide cross section of society (the primary study was of mainly elderly males)
Independent replication by Western researchers is limited
Malinda et.al, Thymosin 4 Accelerates Wound Healing, Journal of Investigative Dermatology, Volume 113, Issue 3, 1999, Pages 364-368, ISSN 0022-202X, Study of Thymosin Beta 4 in Patients With Pressure Ulcers
Here is our honest, evidence-based answer: BPC-157 Side Effects: What the Evidence Shows BPC-157 has demonstrated an excellent safety profile in over 100 preclinical studies, with no significant toxicity even at very high doses in animal models
The peptide has never been tested on humans except for one small trial that was never published