Prevalence of vitamin D analogue toxicity in dogs.

Calcipotriol, calcitriol and tacalcitol are topical vitamin D analogues commonly used to treat psoriasis1 . As clinicians, although the treatments are often well tolerated, we often consent the known adverse effects1,2 such as irritation, erythema, and rarely photosensitivity. Vitamin D analogue toxicity in dogs is rarely reported with only 2 cases reported in veterinary literature3,4 , and more recently, 2 reports in dermatology literature4,5 . This is the first published study in reporting the exact number of cases and the clinical effects of vitamin D analogue toxicity in dogs.