Breaks up mucus and relieves cough. Mucinex Dm (Dextromethorphan / Guaifenesin) is okay for loosening congestion in your chest and throat, but it could prevent you from coughing the mucus up. It comes as an extended-release tablet and a short-acting liquid.
Relieves cold and flu symptoms. Tylenol Cold Multi-Symptom Daytime (Acetaminophen / Dextromethorphan / Phenylephrine) is good for multiple cold symptoms, but it's more medicine than you need if you only have one symptom.
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Mucinex Dm (Dextromethorphan / Guaifenesin) is a combination medicine. Guaifenesin is an expectorant that breaks up and thins out mucus. Dextromethorphan is a cough suppressant.
Tylenol Cold Multi-Symptom Daytime (Acetaminophen / Dextromethorphan / Phenylephrine) is a combination medicine that treats cold and flu symptoms. Acetaminophen relieves pain and reduces fever. Dextromethorphan is a cough suppressant. Phenylephrine is a decongestant that clears your sinuses.
› Mucinex Dm (Dextromethorphan / Guaifenesin) is a combination medicine that relieves multiple cold symptoms. It's good to use if you have chest congestion and a cough.
› Helps loosen the mucus and phlegm that builds up in productive and wet coughs.
› The extended release version of Mucinex DM lasts up to 12 hours.
› Tylenol Cold Multi-Symptom Daytime (Acetaminophen / Dextromethorphan / Phenylephrine) is a combination medicine that relieves multiple cold symptoms. It's good to use if you have a stuffy nose, a cough, fever, and pain.
› The decongestant (phenylephrine) has fewer side effects than other decongestants like pseudoephedrine. It doesn't raise your blood pressure and heart rate as much, or cause as much trouble falling asleep.
› The pain reliever (acetaminophen) is easier on your stomach and has fewer drug interactions than other pain medications like aspirin or ibuprofen.
Downsides and risks
Tylenol Cold Multi-Symptom Daytime
› Mucinex Dm (Dextromethorphan / Guaifenesin) isn’t useful if you have a dry cough without mucus or phlegm.
› The two medications in this product could potentially work against each other. Guaifenesin makes mucus easier to cough up, while dextromethorphan (the "DM" in Mucinex Dm (Dextromethorphan / Guaifenesin)) stops you from coughing.
› Can cause sleepiness, dizziness, and an upset stomach.
› If you don't really need all of the medications in this combination, you're taking extra medicine and might have extra side effects for no reason.
› Phenylephrine doesn't last as long as other oral decongestants like pseudoephedrine.
› You shouldn't use it if you have high blood pressure.
› To avoid hurting your liver, you have to keep track of the total amount of acetaminophen (APAP) you're taking since it's a very common ingredient in pain and cold/flu combination medicines.
Tips from our pharmacists for people taking the medication
Tylenol Cold Multi-Symptom Daytime
› Cough suppressant starts working in 15 to 30 minutes.
› Follow age-specific dosing instructions on how much to take. Don't take more than the recommended dose.
› Drink plenty of fluids while taking Mucinex Dm (Dextromethorphan / Guaifenesin) because liquid helps break down mucus.
› If your cough lasts more than 7 days, call your doctor.
› Tylenol Cold Multi-Symptom Daytime (Acetaminophen / Dextromethorphan / Phenylephrine) starts working in about 30 minutes.
› Phenylephrine, the decongestant, can make you restless, so don't take it too close to bedtime.
› Contains acetaminophen, also known as Tylenol or APAP. Taking too much can cause liver failure and death. Don't take more than what's recommended on the package or with other Tylenol-containing products.
› If you get the liquid form, use the dosing cup to measure the exact amount of medicine you need.
› Let your doctor know if your symptoms don't improve in a few days, or if you have a really bad sore throat with a fever, headache, nausea, or vomiting.