Otrivin Baby Saline Nasal Spray contains purified salt solution and is used to alleviate nasal congestion by moisturizing and loosening mucus in the nose. It provides quick relief from blocked noses caused by common colds or allergies. The spray works by moisturizing the inner lining of the nose. It should be used externally as directed by a doctor. To use, tilt your head back, hold the dropper close to the nose without touching it, gently squeeze the dropper to administer the medicine, and then lean your head forward after a few minutes. While generally safe with minimal side effects, nasal irritation may occur upon application. Inform your doctor about any medications being taken or allergies, and if pregnant or breastfeeding. Seek medical advice if a dose is missed.