Last night I took a Zantac, dinner did not agree with me. Before I went to bed I took the pain reliever and a short time later I had tingling, rapid heart beat. Did not feel well at all and could not get to sleep. Was it due to the zantac? I have not had this reaction before. I usually take it before p/t and only if in a lot of pain before I go to bed. Please advise, Marlene