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A 28-year-old male asked:

Hi i took robitussin dm (guaifenesin and dextromethorphan) about 3 hours ago and it hasn't helped, is it to soon to take some nyquil?

1 doctor answer1 doctor weighed in
Dr. Sean Agazanof
Pharmacology 11 years experience
Maybe : Just take a Benadryl (diphenhydramine) it'll knock you out. If you are coughing and miserable make an appointment with your doctor and get the codeine cough syrup and get 10 hours of sleep. It will help. Sleep works wonders and the codeine cough syrup is godsent for coughs keeping you up at night until you recover from your cold.
Dr. Sean Agazanof
Pharmacology 11 years experience
Provided original answer
If you take NyQuil make sure you aren't doubling up on ingredients. Many OTC medications contain the same ingredients so take caution not to overdose.
Dec 23, 2015

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Last updated Mar 2, 2016

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