Significant: Hypomagnasaemia, cutaneous lupus erythematosus, SLE, osteoporosis-related fractures, fundic gland polyp, carcinoma, Clostridium) difficile-associated diarrhoea, interstitial nephritis, Vitamin B12 deficiency (long-term therapy), gastrointestinal infection (e.g. salmonella, Campylobacter). Gastrointestinal disorders: Nausea, vomiting, diarrhoea, constipation, flatulence, abdominal pain. General disorders and administration site conditions: Weakness, malaise. Hepatobiliary disorders: Increased liver enzymes. Immune system disorders: Urticaria. Metabolism and nutrition disorders: Peripheral oedema. Musculoskeletal and connective tissue disorders: Back pain. Nervous system disorders: Headache, dizziness, somnolence, paraesthesia, vertigo. Psychiatric disorders: Insomnia. Respiratory, thoracic and mediastinal disorders: Cough. Skin and subcutaneous tissue disorders: Rash, dermatitis, pruritus.