For children aged 6 and older, an alcohol-free, fluoride mouthwash like Colgate Kids or Listerine Smart Rinse is excellent for cavity protection. For a multivitamin and mineral syrup, Wellkid Multi-vitamin Liquid is a highly regarded, kid-friendly option. Please note that supplements are generally only necessary if your child is a picky eater or has a specific deficiency. I strongly recommend consulting your paediatrician before starting any syrup to ensure the correct dosage and to confirm it is necessary for your child?s specific health needs.