COAs include HPLC purity analysis performed by an independent third-party laboratory.
Inflammopharmacology 7:114 Lovric-Bencic M, Sikiric P, Hanzevacki JS, Seiwerth S, Rogic D, Kusec V, Aralica G, Konjevoda P, Batelja L, Blagaic AB (2004) Doxorubicine-congestive heart failure-increased big endothelin-1 plasma concentration: reversal by amlodipine, losartan, and gastric pentadecapeptide BPC157 in rat and mouse
Oral vitamins must get broken down by the GI tract (through stomach, intestines) then go through the liver for metabolizing
For people who want simplicity, the 10mg/ml concentration at 5mg dose is ideal
Hashad, and R
The International Journal of Biochemistry & Cell Biology, 37 (8), 1727-37