What it means: “Non-drowsy” is code for antihistamines and other medications that don't make you sleepy. They're a good choice for allergy relief during daytime hours. But the non-drowsy claim doesn't necessarily mean that the drugs will help you stay alert, though some might contain stimulating ingredients.

Will Allegra non-drowsy keep me awake?

Fexofenadine is known as a non-drowsy antihistamine. That's because it's less likely to make you feel sleepy than drowsy (sedating) antihistamines, such as Piriton (chlorphenamine).

Can you take non-drowsy allergy medicine at night?

You can take Claritin (loratadine) in the morning or at night, with or without food. Claritin (loratadine) typically causes less drowsiness compared to other antihistamines, but some people may feel a little sleepy while taking this medication.