Emerson Healthcare Cold and Sinus Relief Zicam 4X-Strength Nasal Swab is a revolutionary solution for rapid cold and sinus symptom relief. Its potent formula, containing four times the zinc acetate of regular Zicam nasal swabs, forms a protective barrier in the nasal passage, combating cold and flu viruses. Within 24 hours, it alleviates congestion, runny nose, scratchy throat, and sneezing, without causing drowsiness or other side effects. The convenient nasal swab applicator ensures quick and targeted application for immediate relief. With 20 swabs in each box, Zicam 4X-Strength Nasal Swab provides multiple uses until symptoms subside. Its mechanism of action, which involves blocking viral replication, makes it an effective and reliable cold and sinus remedy. However, it's essential to adhere to the directions for use, especially avoiding it in children under 12 years of age and consulting a healthcare professional if one has a weakened immune system or is taking prescription medications.