Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of mouth, nose & throat; hypotension, headache, palpitations, tachycardia, extrasystoles; hemolytic anemia, thrombocytopenia, agranulocytosis; sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesia, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, neuritis, convulsions; epigastric distress, anorexia, nausea, vomiting, diarrhea, constipation; urinary frequency, difficult urination, urinary retention, early menses; thickening of bronchial secretions, tightness of chest & wheezing, nasal stuffiness. May interfere w/ wheal formation in skin testing for skin sensitizing reaginic antibodies.
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