These medical condition or symptom topics may be relevant to medical information for Drug intoxication: 1  Drug. 2  Drug symptoms (36 causes) 3  Intoxication.
Side effects of famotidine are rare. The most commonly reported minor side effects are: constipation, diarrhea, fatigue, headache, insomnia, muscle pain, nausea, and ; vomiting. Other important side effects include: anemia, confusion, easy bruising or bleeding, hair loss, rash, More serious side effects include: depression, hallucinations,
Based on these studies, the most common side effects of famotidine include: 1  Headaches -- in up to 4.7 percent of people. 2  Diarrhea -- up to 1.7 percent. 3  Dizziness -- up to 1.3 percent. 4  Constipation -- up to 1.2 percent.