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The glucocorticoid sparing efficacy of PhytopicaTM in the management of canine atopic dermatitis

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This double-blind randomized placebo-controlled trial indicates that Phytopica™ can be an effective glucocorticoid sparing agent in canine atopic dermatitis (AD). Twenty-two dogs with perennial AD [Canine Atopic Dermatitis with Severity Index (CADESI-03) ≥ 60] were given 200 mg/kg Phytopica™ or an identical placebo in food once daily for 56 days. All dogs were initially given 0.4 mg/kg methyl-prednisolone once daily, which was then adjusted according to the daily pruritus score (0–100 mm visual analogue scale). The cumulative dose and pruritus score were lower in the Phytopica™ than the placebo group. There were statistically significant time and treatment effects for the methyl-prednisolone dose and pruritus score, but there were no significant differences between the Phytopica™ and placebo groups in the proportion of dogs that achieved a > 50% reduction in dose or pruritus scores at day 56; the mean CADESI-03 scores at days 0, 28 and 56; the numbers achieving >50% reduction in CADESI-03 at days 28 and 56; or in the owners’ global efficacy score at days 28 and 56. Adverse events included diarrhoea (three Phytopica™ and one placebo treated dog), polyuria/polydipsia (three dogs in each group), and polyphagia, intermittent anorexia and panting (one dog each in the placebo group). None of these by themselves required withdrawal of treatment.
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Document Type: Research Article

Affiliations: 1: The University of Liverpool School of Veterinary Science, Leahurst, UK 2: The Royal Veterinary College, Hatfield, UK 3: Intervet-Schering Plough Animal Health UK Ltd., Milton Keynes, UK 4: Phytopharm plc, Godmanchester, UK

Publication date: February 1, 2010

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