How Much Dextromethorphan is in a Bottle of Nyquil?
Nyquil is an over-the-counter medication used to treat symptoms of the common cold and flu. It contains several active ingredients, including dextromethorphan (DXM). DXM is a cough suppressant that works by blocking signals from the brain that cause coughing.
The amount of DXM in a bottle of Nyquil varies depending on the type and strength of the product. The original Nyquil liquid contains 10 mg of DXM per 30 mL dose. The maximum recommended daily dose for adults is 30 mL, which would provide a total of 30 mg of DXM.
Nyquil Cold & Flu Nighttime Relief Liquid
This version of Nyquil contains 15 mg of DXM per 30 mL dose. The maximum recommended daily dose for adults is still 30 mL, which would provide a total of 45 mg of DXM.
Nyquil Severe Cold & Flu Nighttime Relief Liquid
This version of Nyquil contains 20 mg of DXM per 30 mL dose. The maximum recommended daily dose for adults is still 30 mL, which would provide a total of 60 mg of DXM.