Ascophyllum nodosum as a nutrient supporting oral health in dogs and cats: a review

This review article synthesizes current evidence on the role of Ascophyllum nodosum as a nutritional support for oral health in dogs and cats. Drawing on both clinical studies and mechanistic research, the authors highlight consistent findings that supplementation can reduce plaque accumulation, calculus formation, and halitosis, while supporting overall periodontal health. The review discusses potential mechanisms, including interference with bacterial adhesion, antimicrobial activity, and systemic effects mediated through saliva after digestion and absorption. It also situates A. nodosum within the broader landscape of oral care strategies, emphasizing its value as a passive, diet-based intervention that complements mechanical cleaning methods such as brushing. Overall, the evidence supports A. nodosum as a practical and well-tolerated adjunct for improving oral hygiene and reducing the oral hygiene and reducing the accumulation of plaque and calculus in companion animals.