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A female asked:

Can you take nyquil 4 hours after taking robitussin (guaifenesin) cough and cold?

1 doctor answer2 doctors weighed in
Dr. Lori Semel
Pediatrics 36 years experience
Yes: Robitussin (guaifenesin) cough and cold is a 4 hour medication. No problem to take the Nyquil before bed.
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Last updated Jun 17, 2021


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