Introducing Mucinex® InstaSoothe Sore Throat + Pain Relief Spray. This Powerful sore throat relief with soothing cherry flavor is an easy-to-use spray that numbs pain fast so you can get back to your day. Our alcohol-free spray numbs pain fast and helps to relieve occasional minor irritation and pain associated with sore throat, sore mouth and canker sores. Powerful sore throat relief with soothing cherry flavor. Adults and children 12 years of age and over: Apply to affected area (one spray); gargle, swish around in the mouth, or allow to remain in place at least 1 minute then spit out. Use up to 4 times daily or as directed by a doctor. Children 6 to under 12 years of age: Supervise use. Children under 6 years of age: Do not use.