Like Zyrtec, this is a second-generation antihistamine. “The second generation drugs do not pass as readily ... so it’s unlikely to make you drowsy, she says. It also takes a bit longer ...

sometimes the Zyrtec works better for that sort of situation,” he added. Even if the allergy medicine is marketed as non-drowsy, Dr. Patel says some allergy meds can make you feel a little sleepy.

The dozens of types of allergy medication found at your local pharmacy can be ... likely to make you drowsy. Claritin is long-acting, with effects that last for 24 hours. Zyrtec acts the fastest ...