Well I took 2 capsules (BA 800 mg, L-Histidine 75 mg) 4 separate times yesterday (Total BA 3,200 mg and L-Histidine 300mg). I personally felt no different really but maybe slightly itchy. I was looking forward to seeing what the tingles were all about but I did not get anything special. I read it takes awhile to see any effects in your lifting so I will continue to use it for awhile![]()