Manufacturer: Apex Laboratories Pty Ltd Registered Name Acidurin Tablets Urinary Acidifier for Dogs and Cats Composition Ammonium chloride 100 mg. Actions Urinary acidifier. Indications Urinary tract infections, and acidification of urine in dogs and cats. Contraindications Administration during pregnancy, as the product may cause foetal acidosis. Warnings Exercise caution if used with sulfonamide therapy due to danger of crystalluria. Discontinue use during pregnancy, as the product may cause foetal acidosis. Precautions First aid. If poisoning occurs, contact a doctor or Poisons Information Centre. Phone Australia 131 126. Dosage and Administration Dogs, cats. 20 mg/kg (1 tablet/5 kg bodyweight) twice daily or as directed by a veterinary surgeon.