Neilmed SinuRinse is designed to provide natural sinus relief that effectively relieve allergies and sinus symptoms such as nasal allergies and congestions, sinus pressure and nasal stuffiness, nasal symptoms from flu and cold and nasal dryness with no burning, preservative free and drug free.This pack of 50 refill sachets is designed for use in conjunction with the Neilmed SinuRinse bottle available for purchase within the Neilmed starter kit.