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Vet Dermatol. 2011 Feb;22(1):53-60. doi: 10.1111/j.1365-3164.2010.00910.x.

Zinc-carnosine and vitamin E supplementation does not ameliorate gastrointestinal side effects associated with ciclosporin therapy of canine atopic dermatitis.

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Animal Dermatology Clinic, Tustin, CA 92780, USA.


Chelated zinc-carnosine and vitamin E [GastriCalm(®) (GCM); Teva Animal Health] is marketed as an anti-emetic supplement for dogs to assist the repair of damaged stomach and intestinal mucosa. The purpose of this prospective, double-blinded, placebo-controlled trial was to determine whether GCM reduced the frequency of vomiting, diarrhoea and appetite changes during initiation of ciclosporin (Atopica(®); Novartis Animal Health) therapy for the treatment of canine atopic dermatitis. Sixty privately owned dogs diagnosed with atopic dermatitis were randomly assigned to GCM (n=30) or placebo (n=30) groups. All dogs received ∼ 5 mg/kg ciclosporin (range, 3.5-5.8 mg/kg) once daily. Dogs <13.6 kg received half a tablet of GCM or placebo; dogs ≥ 13.6 kg received one tablet once daily. GastriCalm(®) or placebo was administered 30 min prior to eating, and the ciclosporin was administered 2 h after feeding. Owners recorded episodes of vomiting, diarrhoea and appetite changes. Dogs were examined on days 0 and 14. Forty-one of 60 dogs (68.3%) had at least one episode of vomiting, diarrhoea or appetite change, leaving nine placebo dogs (30%) and ten GCM dogs (33.3%) free of adverse events (AE). Twenty-seven of 60 dogs (45%) vomited, and 15 of 60 (25%) had diarrhoea. There was no significant difference in episodes of individual AEs, but the placebo group had a significantly lower total AE score (summation of episodes of appetite change, vomiting and diarrhoea; P=0.022). Small dogs (<6.82 kg) had significantly fewer total AEs in both treatment groups and tolerated ciclosporin better than larger dogs (P<0.05).

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