title: [Vitamin D intoxication caused by drugs bought online. Sky high daily dosage for six months resulted in severe hypercalcemia].
abstract: Intoxication with vitamin D may lead to severe hypercalcemia, renal failure and occasionally to death. An increasing amount of vitamin D supplement is sold over-the-counter (OTC) or over the internet. Here we present a case were a person obtained vitamin D over the internet and administered 50 000 IE daily to his father for a period of six months, in the pursuit to stop or reverse the progression of a vascular dementia. The treatment resulted in a severe hypercalcemia and recurrent hospitalizations. In cases with an unexplained hypercalcemia, being associated with high levels of 25(OH)-vitamin D3 the possibility of intake of D-vitamin sold without a doctor's prescription should be investigated.
authors.affiliation: Södersjukhuset - Sektionen för endokrinologi och diabetes Stockholm, Sweden Södersjukhuset - Sektionen för endokrinologi och diabetes Stockholm, Sweden.
authors.forename: Buster
authors.initials: B
authors.lastname: Mannheimer
authors.affiliation: institutionen för klinisk forskning och utbildning, Karolinska institutet - Stockholm, Sweden - , Sweden.
authors.forename: Ove
authors.initials: O
authors.lastname: Törring
authors.affiliation: institutionen för klinisk forskning och utbildning, Karolinska institutet - Stockholm, Sweden institutionen för klinisk forskning och utbildning, Karolinska institutet - Stockholm, Sweden.
authors.forename: David
authors.initials: D
authors.lastname: Nathanson
mesh_terms: D000369:Aged, 80 and over; D002112:Calcifediol / Q000008:administration & dosage / Q000506:poisoning* / Q000627:therapeutic use; D003704:Dementia / Q000188:drug therapy; D019587:Dietary Supplements; D006801:Humans; D006934:Hypercalcemia / Q000139:chemically induced*; D020407:Internet; D008297:Male; D014807:Vitamin D / Q000008:administration & dosage / Q000506:poisoning* / Q000627:therapeutic use
chemical_list: D014807:Vitamin D; D002112:Calcifediol