( PMID: 23324757 ) Benzaquen M, Borradori L, Berbis P, Cazzaniga S, Valero R, Richard MA, Feldmeyer L (2018) Dipeptidyl peptidase IV inhibitors, a risk factor for bullous pemphigoid: retrospective multicenter case-control study from France and Switzerland
13 RawsthorneH.TurnerK
Stellar E
Als-Nielsen B, Koretz RL, Kjaergard LL, Gluud C
Summary: Excessive vitamin B12 intake rarely causes toxicity, but very high levels from supplements or injections may be associated with skin reactions such as acne-like eruptions, though serious adverse effects remain exceptionally uncommon
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