Do you have the reference to the vitamin E claim? Because I think that VECAR (a novel heterodimer of α-tocopherol (vitamin E) and carnosine) is not the same as taking Carnosine and vitamin E separately and, in fact, what I've found is
Dietary vitamin E, but not carnosine, increased levels of vitamin E
Muscle vitamin E concentrations were not significantly affected by dietary carnosine.
Carnosine supplementation significantly increased E levels in liver and heart, but not in skeletal muscle, serum, or erythrocytes.
but I'm not able to find any research about Vitamin E increasing carnosine efficacy.
@William
I don't think it is easy (or even possible) to find original research that made them buffer α-tocopherol with l-carnosine (I understand it's not just a mixture of the two, but special (which one?!) buffering technique).
However, a quick search on pubmed does give some confirming research (seems to come from the same group of Turkish scientists):
Effect of carnosine alone or combined with α-tocopherol on hepatic steatosis and oxidative stress in fructose-induced insulin-resistant rats. [1]
Protective effects of carnosine alone and together with alpha-tocopherol on lipopolysaccharide (LPS) plus ethanol-induced liver injury. [2]
[1] https://www.ncbi.nlm...pubmed/24464863
[2] https://www.ncbi.nlm...pubmed/26773358
(full papers available on sci-hub [dot] cc)
Cheers!