1 doctor weighed in:

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 weighed in
Dr. Sean Agazanof
Pharmacology

In brief: 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.

In brief: 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
Dr. Sean Agazanof
Thank
1 comment
Dr. Sean Agazanof
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.
Get help from a real doctor now
Dr. Aaron Milstone
Board Certified, Internal Medicine - Pulmonology
24 years in practice
1M people helped
Continue
111,000 doctors available
Read more answers from doctors