Is It Safe To Take Allegra When Breastfeeding? Uses & Risks

Many use antihistamines such as allegra to treat certain allergies and health conditions. But can you take allegra while breastfeeding? When breastfeeding, moms should watch everything they take, including medication, since it can reach the baby through breastmilk. Although not all antihistamines are safe in breastfeeding, fexofenadine (Allegra) is considered safe to treat allergies in nursing mothers. However, lactating mothers are advised to seek a doctor’s consultation before taking any medication since they can help adjust the dosage, schedule medication and feeding time to reduce the effects, and prescribe safe medications. Keep reading to know more about the safety of antihistaminesiXMedicines to treat the allergy symptoms. for nursing moms and the potential impact they can have on infant safety.

What Is Fexofenadine?

Allegra (Fexofenadine) is an antihistamine drug

Fexofenadine is a drug used to treat seasonal allergies such as allergic rhinitis. It is an antihistamine that provides relief from sneezing, watery eyes, runny nose, itching, and other allergic conditions. Antihistamines block a natural substance in the body called histamineiXA chemical responsible for the allergy symptoms. . Histamine typically reacts with an allergen and causes allergy symptoms. Other than allergies, Fexofenadine is also used to treat urticariaiXA temporary reddish discoloration of the skin, swelling associated with itching. (red and itchy skin, hives) (1).

Fexofenadine is a second-generation antihistamine. Second-generation antihistamines are called non-sedating antihistamines as these do not cause drowsiness, unlike the first-generation ones (2). Fexofenadine is available in the form of tablets, capsules, and liquid medicine. Allegra is the brand name of fexofenadine.

Is It Safe To Use Fexofenadine (Allegra) While Breastfeeding?

It is quite safe to use Allegra while breastfeeding because fexofenadine passes into breast milk in low amounts (less than 1% of the dose taken). This amount generally does not cause any problem to the breastfeeding infants. However, use any drug only after seeking approval from your doctor (3).

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If you are using fexofenadine while breastfeeding, monitor your baby for any side effects. Look for unusual symptoms such as increased irritability, sudden changes in your baby’s sleeping, or feeding patterns (4).

Side Effects Of Fexofenadine (Allegra) While Breastfeeding

Allegra breastfeeding has certain side effects. It is not unusual as most drug use carries the risk of side effects. These side effects may be mild to severe.

If you plan to use fexofenadine while breastfeeding, observe any symptoms you experience after taking a dose. It is also a good practice to discuss any potential side effects with your doctor before you plan to take the drug while breastfeeding. Doing so can help you make an informed decision about your health (3).

Some common side effects of using fexofenadine while breastfeeding include (1):

  • Dizziness
  • Cough
  • Fever
  • Headache
  • Pain during menstruation
  • Pain in the back, arms or legs
Allegra can cause pain in back, Can you take allegra while breastfeeding
  • Vomiting
  • Diarrhea

The side effects of fexofenadine are rare. But if you experience the following symptoms after a dose of fexofenadine, inform your doctor about it (4). Some of the severe effects of fexofenadine include (1):

  • Rash
  • Swollen lips, tongue, throat or eyes
  • Swelling in hands or legs
  • Difficulty in breathing
  • Trouble swallowing
  • Hives

Fexofenadine use may also cause different side effects on your maternal health. If you feel any discomfort after using fexofenadine, tell your doctor about it.


You may need to follow certain precautions with your fexofenadine use. So, here we look at some Allegra and breastfeeding safety tips.

  • Fexofenadine may interact with your other medicines or certain foods. There are no specific foods that you must avoid when using this drug unless advised by your doctor. For instance, your doctor may ask you to avoid eating apples and citrus fruits like orange and grapefruit when using fexofenadine. Substances present in these fruits may interfere with the absorption of fexofenadine (5).
Avoid eating apples and citrus fruits when taking fexofenadine
  • You may be allergic to a compound in fexofenadine. Therefore, it is important to monitor your health even when you use a safe drug like fexofenadine while breastfeeding (1).
  • Always maintain a time gap of two hours between your fexofenadine dose and medicines or supplements that contain magnesium or aluminum. These substances can interfere with optimum fexofenadine absorption in the body (5).
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Use Of Antihistamines While Breastfeeding

It is safe to use all antihistamines while breastfeeding. Only a minimal amount of these drugs pass into the breast milk; there are no serious concerns about the use of antihistamines while nursing. But you may find it useful to know detailed information about antihistamine use while breastfeeding.

  • Second-generation antihistamines like fexofenadine are considered safer to use compared with first-generation antihistamines like diphenhydramine, chlorpheniramineiXAn antihistamine to treat runny nose, watery eyes, and itching caused due to allergies., and others. The reason for this is that newer antihistamines do not cause sedating effects in users. Drowsiness can be risky for anyone as it can interfere with tasks. Imagine feeling sleepy while driving with your infant to the doctor or any such dangerous scenario. The sedating effects of antihistamines can also transfer to your breastfeeding infant. If you are concerned with this aspect of antihistamines, ask your doctor to recommend one that causes the least sedative effect and least amount of drug transfer. All second-generation antihistamines like fexofenadine, loratadine, cetirizine, and desloratadineiXAn antihistamine to treat the symptoms of allergy. are non-sedating drugs (2).
Ask your doctor to recommend antihistamine with least sedative effect
  • Use any drug while breastfeeding only if it is necessary for your well-being. Seasonal allergies are not life-threatening health conditions. But symptoms of allergies can be very uncomfortable. Unless you experience side effects from fexofenadine or any other antihistamine drug, you can safely use it while breastfeeding. But resist the temptation of buying an over-the-counter (OTC) dose of the medicine. Discuss your allergy symptoms with your doctor for the appropriate antihistamine and its right dose for you (6).
  • There are clinical studies available on first-generation antihistamines. But adequate research is not yet available for all second-generation antihistamines. Clinical research on the effects of fexofenadine during lactation is low (6).
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Using Fexofenadine (Allegra) While Breastfeeding

Even though fexofenadine passes into breast milk in low amounts, you can further reduce this risk by following certain measures (7).

  • Ask your doctor to recommend fexofenadine in the lowest dose possible to treat your allergies.
  • If your allergy symptoms consist of only nasal congestion, ask your doctor for a safe nasal spray you can use while breastfeeding. Avoid taking an oral medicine if you can treat a condition with a nasal spray or topical application.
Ask your doctor for a safe nasal spray while breastfeeding
  • Feed your baby before you use fexofenadine. This way you can further reduce your baby’s exposure to the drug. You can also express the breast milk for your baby’s next feed before you use fexofenadine.
  • You may worry about the effects of your drug use during breastfeeding on your baby’s health. But you do not need to suffer from allergies or other health problems while you are nursing your child. You can make safe choices about your drug use with the right information at your disposal.
  • Share your concerns with your doctor and ask for medicines that you can use during breastfeeding without any problems to you and your baby’s health.

It is wise to consult a doctor before taking antihistamines while breastfeeding. These medications are used for treating allergies, and lactating mothers must know the safe options. Fexofenadine or Allegra is considered a safe antihistamine during breastfeeding. Taking it under medical supervision can help prevent overdose and side effects such as dizziness, body pains, and loose stools. Look out for any signs of discomfort in your baby. This drug may be present in varying amounts in OTC products, and you should avoid self-medicating under all circumstances.

Key Pointers

  • Fexofenadine is an antihistamine drug used to treat seasonal allergies and provide relief from itching, sneezing, and runny nose.
  • It is considered safe for consumption in prescribed doses during breastfeeding as its contents are unlikely to harm the infant.
  • Some side effects of the drug may include dizziness, headache, vomiting, diarrhea, rash, swelling, and difficulty breathing in severe cases.
  • Fexofenadine may react with other medications and food; hence it is advised to consult a doctor before using it.

Curious about whether or not antihistamines affect your milk supply? Dive into this video to uncover insights and learn how these common medications may impact breastfeeding moms.

Article written by Baby Plumbing

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