Acute allergic reactions eg, redness, itching, urticaria, edema of face or other parts & dyspnea; proteinuria, BUN elevation; anemia; rash, pruritus, erythema exudativum multiforme, oculo-mucocutaneous syndrome (eg, Stevens Johnson syndrome, toxic epidermal necrolysis); sleepiness, insomnia, headache, numbness, stiffness & tremor in extremities; nausea, vomiting, anorexia, stomach discomfort, abdominal pain, diarrhea, constipation, thirst, stomatitis, feeling of enlarged abdomen; urinary retention & incontinence, feeling of residual urine; weakness, lightheadedness, generalized fatigue, muscle hypotonia, dizziness; hot flushes, diaphoresis, edema.