Effect of S-adenosylmethionine tablets on the reduction of age-related mental decline in dogs: a double-blinded, placebo-controlled trial |
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Authors: | Rème C A Dramard V Kern L Hofmans J Halsberghe C Mombiela D Vida |
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Institution: | Medical Department, Virbac Laboratories, Carros, France. |
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Abstract: | Oral S-adenosylmethionine (SAMe) tosylate supplementation (Novifit tablets, Virbac) was evaluated as a dietary aid for the management of age-related mental impairment in dogs. Thirty-six dogs older than 8 years that had displayed signs of cognitive dysfunction for at least 1 month were selected for the study. The dogs were administered 18 mg/kg SAMe tosylate (n=17) or identical placebo tablets (n=19) for 2 months. Concurrent behavioral treatment was forbidden. A 14-item standardized questionnaire evaluated behavior and locomotion difficulties. Compared with the placebo group, SAMe-treated dogs showed greater improvement in activity (41.7% versus 2.6% after 4 weeks, P<.0003; 57.1% versus 9.0% after 8 weeks, P<.003) and awareness (33.3% versus 17.9% after 4 weeks, P<.05; 59.5% versus 21.4% after 8 weeks, P<.01). The aggregate mental impairment score was reduced by more than 50% in 41.2% and 15.8% of dogs treated with SAMe and placebo, respectively, at week 8. SAMe tosylate tablets proved safe and effective in improving signs of age-related mental decline in dogs. |
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