Summaries of excluded full‐length papers
Reference	Exclusion reason
Boissonnas A, Casassus P, Caquet R, Laroche C. Hyponatraemia in a cirrhotic suffering from late cutaneous porphyria: A drug to avoid, demeclocycline. [French]. Nouvelle Presse Medicale 1979; 8(3): 210.	Not SIADH
Burst V, Verbalis J, Greenberg A et al. Hyponatraemia in the hospital setting: Interim results from a prospective, observational, multi‐center, global registry. Pneumologie Conference 2013; 54.	Conference abstract – no full text available
Cawley MJ. Hyponatraemia: Current treatment strategies and the role of vasopressin antagonists. Annals of Pharmacotherapy 2007; 41(5): 840–50.	Review with no relevant data
Jellett L, O'Hare J, McAleese J. Syndrome of inappropriate antidiuretic hormone (SIADH) in patients with small cell lung cancer & incidence and response to treatment. Lung Cancer 2011;Conference: 9th Annual BTOG Conference 2011 Dublin Ireland. Conference Publication: 71: S41.	Conference abstract – no full text available
Kamoi K, Ebe T, Kobayashi O et al. Atrial natriuretic peptide in patients with the syndrome of inappropriate antidiuretic hormone secretion and with diabetes insipidus. Journal of Clinical Endocrinology and Metabolism 1990; 70(5):1385–90.	Small case study – three patients treated and no safety issues reported
Kamoi K, Toyama M, Takagi M et al. Osmoregulation of vasopressin secretion in patients with the syndrome of inappropriate antidiuresis associated with central nervous system disorders. Endocrine Journal 1999; 46(2): 269–77.	No specific demeclocycline results
Laszlo FA, Varga C, Doczi T. Cerebral oedema after subarachnoid haemorrhage. Pathogenetic significance of vasopressin. Acta Neurochirurgica 1995; 133 (3–4): 122–33.	No treatment data
Miller PD, Linas SL, Schrier RW. Plasma demeclocycline levels and nephrotoxicity. Correlation in hyponatremic cirrhotic patients. JAMA 1980; 243(24): 2513–5.	Not SIADH
Nagler EV, Haller MC, Van Biesen W et al. Treatments for chronic hyponatraemia: A systematic review of randomised controlled trials. Nephrology Dialysis Transplantation 2013;Conference: 50th ERA‐EDTA Congress Istanbul Turkey. Conference Publication: 28: i387.	Conference abstract – no full text available
Philip T, Souillet G, Gharib C et al. Inappropriate secretion of antiduiuretic hormone during acute leukaemia treated with vincristine. Two cases (author's transl). [French]. La Nouvelle presse medicale 1979; 8(26): 2181–5.	Small case study – one patients treated and no safety issues reported
Shakher J, Thompson J. Tolvaptan cost effective treatment of SIADH in malignancies. Lung Cancer 2013;Conference: 11th Annual British Thoracic Oncology Group Conference, BTOG 2013 Dublin Ireland. Conference Publication: 79: S66.	Conference abstract – no full text available
Walter HS, Ahmed SI. The incidence of hyponatraemia in small cell lung cancer: Prognostic and predictive potential in a retrospective single centre analysis. Lung Cancer 2013;Conference: 11th Annual British Thoracic Oncology Group Conference, BTOG 2013 Dublin Ireland. Conference Publication: 79: S65–S6.	Conference abstract – no full text available