Hypernatremia, metabolic or resp alkalosis, hypocalcaemia, hypochlorhydria, Addison's disease, acute dehydration, heat cramps, overt & occult cardiac failure, severe myocardial damage. Not recommended in concomitant use w/ hexamine mandelate or hippurate therapy. Avoid concomitant use w/ quinolone antibiotics. Severe renal impairment or renal failure.