Nasaline salt is a highly purified sodium chloride/sodium bicarbonate blend specifically for use when mixing saline solution. Box contains 50 pre-measured packets of salt. For use with Nasaline, Squeezie and other nasal rinsing devices.Anyone 4 years or older can use Nasaline. However, children from ages 4-12 should not use Nasaline, without parental supervision, unless advised otherwise by your child's doctor. We suggest Nasaline Junior, a smaller nasal rinsing unit, for ages 4-12, also used with parental supervision. We recommend the NeilMed Baby NäsaKleen Nasal Aspirator for newborns and toddlers