<p>Side effects in decreasing order of frequency are: nausea, headache, dizziness, fatigue, lightheadedness, vomiting, abdominal cramps, nasal congestion constipation, diarrhea and drowsiness. A slight hypotensive effect may accompany treatment. The occurrence of adverse reactions may be lessened by temporarily reducing dosage to 0.5 mg. Abnormalities in laboratory tests may include elevations in blood urea nitrogen, SGOT, SGPT, GGPT, CPK, alkaline phosphatase and uric acid,which are usually transient and not of clinical significance</p>