FDA cautions against using this popular OTC medication for longer than two days.

OTC medications are normally regarded as safe when taken at the suggested dosages.

The U.S. Food & Drug Administration (FDA) has issued a warning on one over-the-counter drug.

When taken as prescribed, the anti-diarrheal medication loperamide, frequently marketed as Imodium A-D, is regarded as safe.

However, if you haven't studied the medication's fine print, you might not be aware that you should only take loperamide for a very little length of time.

If you are using OTC loperamide and your diarrhea lasts more than two days, stop taking the medicine