Head-to-head comparisons of medication uses, side effects, warnings, and more.
Mucinex D (guaifenesin/pseudoephedrine) and Deconex DMX (dextromethorphan/guaifenesin/phenylephrine) are both over-the-counter medications used for relieving symptoms of congestion and cough, but they have different ingredients and uses. Mucinex D combines an expectorant (guaifenesin) with a decongestant (pseudoephedrine) to help loosen mucus and relieve nasal congestion and sinus pressure. It only comes as an extended-release tablet that is taken every 12 hours. Deconex DMX is available in tablet or liquid formulations and includes a cough suppressant (dextromethorphan), an expectorant (guaifenesin), and a decongestant (phenylephrine). It addresses cough, nasal congestion, and sinus pressure, and is taken every 4 to 6 hours. Both of these medications may not be suitable for people with certain health conditions like heart disease or diabetes. Common side effects of Mucinex D is trouble sleeping and headache, while Deconex DMX can cause dizziness and sleepiness.
Deconex DMX is a combination of three medications: dextromethorphan (a cough suppressant), guaifenesin (an expectorant), and phenylephrine (a decongestant). It's used for cough and congestion and available over-the-counter as tablets and a liquid.
Mucinex D is a combination medication containing two active ingredients: guaifenesin (an expectorant) and pseudoephedrine (a decongestant). It's used to help temporarily relieve stuffy nose, chest congestion, and sinus pressure. This medication can be used for people 12 years of age and older. It's an extended-release tablet that's taken by mouth every 12 hours and is also available as a lower-cost generic. Side effects can include trouble sleeping and headache.
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