Check for active ingredients on your child's medications

With allergy season right around the corner, a child could easily be taking multiple medications for allergies, and a cold or cough. Parents need to check for a medication’s active ingredient because a child could experience a reaction if those medicines have the same active ingredient, according to the Food and Drug Administration.

Many medicines have just one active ingredient. However, combination medicines may have more than one, such as those for allergy, cough, or fever and congestion. More than one combination medicine may be one too many, and a child could get a double dose of the same active ingredient.

Active ingredients are listed first on a medicine's drug facts label for over-the-counter products. For prescription medicines, they are listed in a patient package insert or consumer information sheet provided by the pharmacist.

Antihistamines used to combat allergy symptoms are found in many different forms for children and adults: liquids, tablets, creams, nasal sprays, and eye drops. OTC antihistamines with brand name examples include diphenhydramine (Benadryl), chlorpheniramine (Chlor-Trimeton), clemastine (Tavist), fexofenadine (Allegra), loratadine (Claritin, Alavert), and cetirizine (Zyrtec).

“Too much antihistamine can cause sedation and—paradoxically—agitation. In rare cases, it can cause breathing problems, including decreased oxygen or increased carbon dioxide in the blood,” said Hari Cheryl Sachs, M.D., a pediatrician at the FDA in an consumer update.

Here are other active ingredients to look out for that are often found in combination products for allergies, but also used to treat other symptoms, such as fever, headache or nasal congestion. Any of these symptoms may indicate a need for immediate medical attention, according to the FDA.

  • Acetaminophen (in Tylenol and many other products), a pain reliever often used to treat fevers, mild pain or headache. Taking too much can cause liver damage.
  • Ibuprofen (for example, Advil or Motrin), another common medicine for relieving mild to moderate pain from headaches, sinus pressure, muscle aches and flu, as well as to reduce fever. Too much ibuprofen can cause nausea, vomiting, diarrhea, severe stomach pain, and even kidney failure.
  • Decongestants such as pseudoephedrine or phenylephrine (found in brand name drugs such as Actifed and Sudafed) taken in large amounts can cause excessive drowsiness in children. They can also cause heart rhythm disturbances, especially if combined with products and foods containing caffeine. In the form of nasal sprays and nose drops, these products, as well as oxymetazoline (the active ingredients in products such as Afrin), can cause "rebound" congestion, in which the nose remains stuffy or gets even worse.

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