WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to palpitations (fluttering in chest). Click on the combination that matches your symptoms to find the conditions that may cause these problems.
Nerve agents are a class of phosphorus-containing organic chemicals (organophosphates) that disrupt the mechanism by which nerves transfer messages to organs. The disruption is caused by blocking acetylcholinesterase, an enzyme that normally destroys acetylcholine, a neurotransmitter.
Vioxx is a nonsteroidal anti-inflammatory drug that inhibits cyclooxygenase-2 (COX-2). The COX-2 enzyme controls the conversion of arachidonic acid into prostaglandin E2, a hormone that produces inflammation.