Compare to Vicks NyQuil Severe active ingredients. Amazon Basic Care Severe Nighttime Cold and Flu Relief, berry flavor liquid contains maximum strength relief for ages 12 and older. This product relieves common cold and flu-like symptoms so you can rest. Active ingredients in each 30 mL dose are acetaminophen (pain reliever/fever reducer); dextromethorphan HBr (cough suppressant); doxylamine succinate (antihistamine); and phenylephrine HCl (nasal decongestant). This product is alcohol free, sugar free and gluten free.