PT - JOURNAL ARTICLE AU - Sebastien Ellis AU - Georgios Tsiopanis AU - Tanuj Lad TI - Risks of the ‘Sunshine pill’ – a case of hypervitaminosis D AID - 10.7861/clinmedicine.18-4-311 DP - 2018 Aug 01 TA - Clinical Medicine PG - 311--313 VI - 18 IP - 4 4099 - http://www.rcpjournals.org/content/18/4/311.short 4100 - http://www.rcpjournals.org/content/18/4/311.full SO - Clin Med2018 Aug 01; 18 AB - Vitamin D is a fat-soluble vitamin essential for calcium homeostasis and bone health. Vitamin D toxicity or hypervitaminosis D is extremely rare. We describe the case of a 73-year-old man who presented with life-threatening hypervitaminosis D and hypercalcaemia resulting from self-medicated doses of vitamin D supplements. This case, alongside other global case reports, highlights the potential dangers of unlicensed vitamin D replacement. We discuss the evidence for vitamin D replacement and remind readers of the current guidance on daily intake and supplementation.