10 Common Digestive Disorders. Epigastric pain is not a serious symptom on its own. However, if it occurs with other life-threatening symptoms, it may be a sign of a condition that should receive immediate medical treatment, such as a heart attack.
SIDE EFFECTS. The most common adverse reactions of fenfluramine are drowsiness, diarrhea, and dry mouth. Less frequent adverse reactions reported in association with fenfluramine are:
Serious side effects have been reported with phenylephrine including the following: 1  worsening of chest pain or heart failure. 2  decreased heart rate. 3  hypersensitivity (severe allergic reaction). 4  chest pain. 5  swelling of the face, eyes, lips, tongue, arms, or legs. 6  difficulty breathing or swallowing. 7  rash.