If you notice rubber fragments in your solution, do not use it
Bone 24:195202 Sever M, Klicek R, Radic B, Brcic L, Zoricic I, Drmic D, Ivica M, Barisic I, Ilic S, Berkopic L, Blagaic AB (2009) Gastric pentadecapeptide BPC 157 and short bowel syndrome in rats
In research settings, TB-500 is often observed for its interaction with actin, a vital cellular protein essential for cell structure and movement
Disorders of cobalamin (Vitamin B 12 ) metabolism: Emerging concepts in pathophysiology, diagnosis and treatment
Other red flags include suppliers making explicit health or treatment claims, since legitimate research-use suppliers are careful to frame their products strictly for laboratory and research applications rather than implying therapeutic use