--Drowsiness, sedation, dizziness, disturbed coordination, confusion, restlessness, excitation, tremor, irritability, insomnia, paresthesia, neuritis, convulsions, euphoria, headache, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, agitation, palpitation, tachycardia, extrasystoles, hypotension, hypertension, faintness, dysuria, urinary retention, early menses, thickening of bronchial secretions, tightness of chest and wheezing, minor gastrointestinal effects, dry mouth, alteration in bowel habits, nausea, vomiting, epigastric distress, diarrhea, constipation, anorexia, bloating, increased sweating, urticaria, photosensitivity, pruritus, dryness of mouth, throat and nose.