A: Thank you for your question about our Mucinex® Fast-Max® Day/Night Cold & Flu Liquid Gels. We do not certify this product to be 'lactose-free' or 'gluten-free'. We recommend you speak to your health care provider if you are concerned about the suitability of the product for your needs.

A: Thank you for your question about our Mucinex® Fast-Max® Cold & Flu Day/Night liquid gels. Both the daytime and nighttime liquid gels contain Dextromethorphan which has been shown to produce drowsiness in some patients. The nighttime liquid gels also contain Doxylamine succinate and drowsiness has been documented as a potential side effect for this ingredient. People react to drugs in different ways, but at least some of the active ingredients in these products have been shown to produce drowsiness in some patients. For any additional questions, you may wish to consult with your health care provider.

A: Hi Iris. If pregnant of breast-feeding, we advise that you speak with your healthcare professional before using this product.

A: Hello Crystal, we would suggest speaking to your health care professional for that information. Thank you.

A: You can take 2 liquid gels every 4 hours. Do not take more than a total of 12 liquid gels in a 24-hour period. Do not take the first dose of the Night Cold & Flu liquid gels sooner than 4 hours after the last dose of the Day Severe Cold liquid gels unless directed by a doctor.