Quote Originally Posted by smokey the elder View Post
I'm sorry you have had an adverse reaction. Please tell your pharmacist about any adverse reactions and also the manufacturer. (Disclaimer: I work for the parent company of the Zantac (TM) manufacturer.) I had never heard of that particular effect for Zantac (tm). Live and learn!
I was wondering if perhaps Zantac at full prescription dose or higher could cause paranoia in certain predisposed individuals. Such as I am having a rough time at work and Zantac might enhance those emotions.

The evidence is on the web.