Features:

• Bottle with 100 bi-layer, gluten-free tablets made to relieve congestion
• Each tablet contains 600 milligrams of guaifenesin as active ingredient; helps loosen phlegm and thin bronchial secretions to rid the bronchial passageways of bothersome mucus
• Gluten-free; sugar-free; non-drowsy formula
• Bi-layer tablet releases medicine both immediately and over a 12-hour span
• Manufactured in Fort Worth, Texas

Rating : - Finally, something that works that is not expensive!
I have lived here in Tx all of my life, which means bad sinus/allergies! I tried this from a friend of mine, and then saw it on amazon. Thanks! Cheap price too!