Originally Posted by Eric3237

I don't think I would bother with anything having the extra histidine. I don't think it's really a limiting factor and it's put in there because histidine is part of the carnosine recipe. But histidine is used in all sorts of protein synthesis throughout the body whereas alanine is not so what you mostly get is amino competition with is. I would concentrate my funds on just getting more of the beta-alanine as this is what has been shown to increase the levels of carnosine.