Product Description All NEW from Mucinex comes Mucinex Sinus-Max Severe Nasal Congestion Relief Sinus & Allergy Nasal Spray. This convenient spray bottle is great for on-the-go activities to provide you coverage for your nasal congestion relief.Youâ€™ll receive targeted nasal congestion relief due to upper respiratory allergies or hay fever. This fast-acting formula provides up to 12-hour relief and is non-drowsy. Mucinex Sinus & Allergy Nasal Spray temporarily relieves nasal congestion due to a cold, hay fever or other upper respiratory allergies. It promotes nasal & sinus drainage and temporarily relieves sinus congestion & pressure. Get yourself covered this allergy season with Mucinex! Key Features.