My daughter is allergic to mosquitoes and while we were doing the elimination diet she was badly bitten. Our doctor recommended daily double doses of claratyne liquid. On the second day my daughter started to talk incessantly and stutter a little (this had previously been a problem months ago). Then on day 3 at daycare she became drunkish, socially withdrawn and stopped talking (selective mutism, although not gone, had improved on failsafe). The staff at daycare had been amazed to say the least about her improvement on the diet, so this was obvious. When my husband came home, he picked up the bottle of antihistamine and read the label, to my dismay it contained sodium benzoate! Well, that went in the bin, we got claratyne tablets, she had a half, and the next day at daycare she was back to normal.