Effects of an Ascophyllum Nodosum Formulation on Oral Health Index in Dogs and Cats

This clinical study evaluated the effect of a dietary supplement containing Ascophyllum nodosum on oral health in dogs and cats following professional dental cleaning. Over a six-week period, animals receiving the supplement showed a significantly slower deterioration in oral health compared to untreated controls, as measured by the Oral Health Index (OHI). The difference was primarily attributed to reduced accumulation of dental plaque and calculus, which are key contributors to periodontal disease. In fact, the rate of oral health decline in supplemented animals was roughly half that of the control group, and significant differences became evident by day 42. The formulation was generally well tolerated, with no major adverse effects reported. These findings suggest that A. nodosum may provide a practical form of “passive” oral hygiene, helping to maintain better oral health between professional cleanings - particularly in pets where regular brushing is not feasible.