Reglan is a medication prescribed for the treatment of heartburn after eating, gastroparesis, certain digestive orders, nausea, vomiting and morning sickness. Recent studies and reports link Reglan to Tardive Dyskinesia. Tardive Dyskinesia is an involuntary muscle movement that can affect muscles in the face, arms, legs and overall body. The disorder can be irreversible. The FDA has slapped a black box warning on the drug emphasizing the risk of developing the disorder when using the drug. Trials are now being scheduled around the country for people injured by Reglan.