Can You Cut Aller-Flex 180 mg (Kirkland Fexofenadine Hydrochloride Tablets) In Half?

Hi Sori and thanks for reaching out to us. I appreciate you asking. I sometimes find out after the fact that my patients have cut a medication in half which can potentially be unsafe. 

Fexofenadine (or by the brand name, Allegra) is a non drowsy (for most people) antihistamine that is usually taken once a day to help treat seasonal allergies. It is perfectly safe to cut your fexofenadine 180mg tablet in half.

In general, as long as the tablet  doesn’t say extended release, delayed release, or specifically not to cut them, it’s usually safe to cut these medications in half. However, exceptions do exist, so please continue to double check for each individual medication.

There are two different recommended doses for adults taking fexofenadine for allergies. They are 60mg twice daily or the much more common 180mg once daily. If you cut the 90mg dose in half, you are taking a dose that isn’t approved to treat allergies. If you are planning on only taking 90mg once daily, then it probably won’t treat your allergies properly. 

I hope this helps! Feel free to write us again in the future.