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Uses: To loosen chest congestion

Guaifenisin (Mucinex) is an expectorant that thins and loosens mucus so you can cough it up. “If your cough is already loose and productive, you don’t need to take an expectorant,” says Mantione. “But if you feel like your chest is tight and congested, try it.” Look for medications that contain 1,200 milligrams (the most effective dose) and take twice a day, says Mantione.

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