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Is TheraFlu safe for breastfeeding moms?

What breastfeeding moms should know about taking TheraFlu

Breastfeeding moms are superheroes who can fight through anything. When a particularly bad case of the flu hits, though, you might need a little support to ride it out. Sometimes, nursing moms need cold medicine. Theraflu is a safe medication that treats common flu symptoms like low fever, cough, runny nose, and muscle soreness. Breastfeeding moms, however, should take caution when taking Theraflu. Let’s discuss the reasons why.

What is in Theraflu?

Woman in blanket drinking cold medicine

Theraflu is available in various formulas. Different packets treat specific symptoms, though most folks take the multi-symptom product for colds, coughs, runny noses, and fevers. We’ll focus on this multi-symptom brew.

Theraflu is a combination of three ingredients:

  • Acetaminophen relieves pain.
  • Dextromethorphan helps calm down coughs.
  • Phenylephrine clears out sinuses.

Mix the packet into a cup of hot water and you’ve got a potent drink to make you feel better. But is it safe for breastfeeding mamas? Acetaminophen is a common pain reliever, and doctors regularly prescribe it to patients, including new moms. It’s the medicine found in other pain reliever brands like Tylenol.

Dextromethorphan relaxes your brain and muscles, eliminating the persistent need to cough. It’ll calm down your cough for a while but doesn’t really help stop it. It just lets you sleep better for the most part. Phenylephrine helps clear out a stuffy nose by helping reduce swelling in your sinuses. It’s commonly used in allergy medication.

What are the potential side effects of Theraflu?


Medication, food, and nutrients can pass through breast milk to your little one, so double-checking Theraflu’s safety is a good idea. There isn’t a lot of research on the effects of flu medication on breastfeeding women purely based on ethical reasons as it would be improper or downright dangerous to test drugs on moms who breastfeed their children. Nevertheless, there is data extracted from voluntary studies and surveys. Since acetaminophen is such a common medication, it poses little risk to your little one when you take it while breastfeeding. Some infants have also been prescribed acetaminophen, and this prescribed dose is much more than what they would get from your breast milk.

The other two ingredients are where it gets a little tricky. Dextromethorphan is a relaxant and sedative. This means taking high doses might make your little one drowsy, as well. It differs between moms, but it could also mean a dip in your milk supply.

Phenylephrine can also reduce your milk supply while taking Theraflu. However, it seems the effects go away in a few days. Keep in mind that decongestants can make their way into your breast milk and make your little one sleepier than usual.

How often are you taking Theraflu and how often do you feed your child?

mom feeling under the weather holding baby

Taking the side effects into consideration, it might be safe to take Theraflu just once or very infrequently to reduce uncomfortable symptoms. After all, your baby will do much better when you feel better. In addition to your dosage frequency, consider what your baby’s feeding schedule is like.

Try to take a dose only right after you breastfeed. Wait at least two hours (if possible) before breastfeeding again. You might also take a dose at night when your little one is more likely to skip a feeding or eat less. This will help reduce any side effects like drowsiness or irritability.

But the truth? There simply isn’t enough hard, statistical evidence to say whether or not Theraflu is absolutely safe for breastfeeding moms and their babies. Even Theraflu has a disclaimer on each product and on their site that asks nursing moms to consult with their physicians first before taking it.

With that said, let’s take a look at what other choices we have besides flu medication.

What other medications or natural remedies can I take?

Tea Kettle

Experts say topical decongestants like nasal sprays are less likely to make their way into breast milk. You might also try putting a towel over your head and breathing in steam from a freshly boiled pot of water. Beyond that, take a hot, steamy shower and see if it helps reduce congestion.

For coughs, drink lots of water and decaf tea with honey, lemon, and ginger. Pediatricians recommend flu medications with oseltamivir, which is certified safe for nursing moms by the Centers for Disease Control and Prevention. Take acetaminophen for any pains, fevers, or aches.

When taking Theraflu while breastfeeding, there seems to be little risk to your baby. If possible, take only a single dose and try other alternatives before resorting to the multi-symptom packet. But what’s the best thing you can do besides medication? Whenever possible, rest, rest, rest! We know it’s tough getting a busy mom to take a break, but in this case, it’s OK to relax. Moreover, if you’re in need of information regarding NyQuil remedies, check our guide on everything you need to know about NyQuil and nursing.

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