

DayQuil Severe VapoCOOL Cold & Flu Medicine Caplets
Vicks
Overview
This product combines multiple active ingredients to address various cold and flu symptoms. Acetaminophen and Dextromethorphan HBr are generally effective for their stated purposes (pain/fever and cough suppression, respectively). Guaifenesin's utility as an expectorant for cough may be limited based on mixed evidence. Most notably, the inclusion of Phenylephrine HCl for nasal decongestion is a significant concern for efficacy, as numerous studies question its effectiveness as an oral decongestant at standard doses.
The Good
Multi-symptom relief for common cold and flu symptoms (pain, fever, cough, chest congestion, minor aches).
Acetaminophen provides effective relief for pain and fever at a clinically relevant dose.
Dextromethorphan is an effective cough suppressant.
The Bad
Potential for severe liver damage with overdose or concurrent use of alcohol/other acetaminophen products.
Phenylephrine's efficacy as an oral decongestant is highly debated and often found ineffective in studies.
Risk of serious side effects and interactions, particularly with MAOIs and other serotonergic drugs.
Is it for you?
Best For: Individuals experiencing severe cold and flu symptoms like fever, cough, congestion, and body aches.
Skip If: You are taking MAO inhibitors, have severe liver disease, or are allergic to any ingredients. Consult a doctor if you have heart disease, high blood pressure, thyroid disease, diabetes, or glaucoma.
Ingredients Analysis
How to Use
Take 2 caplets with water every 4 hours as needed, not to exceed 4 doses (8 caplets) in 24 hours.
Every 4 hours as needed
Daytime
With or without food