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:
In clinical studies, the most common fentanyl side effects included: 1  Nausea -- in up to 29 percent of people. 2  Vomiting -- up to 21 percent. 3  Dizziness -- up to 19 percent. 4  Drowsiness -- up to 17 percent. 5  Tiredness (fatigue) -- up to 16 percent. 6  Weakness -- up to 13 percent. 7  Dehydration -- up to 13 percent. 8  Shortness of breath -- up to 12 percent.