I've been on over the counter allergra. i usually take it between 8-9 am. is it safe to have a few drinks later on a that night after 9pm?

Depends: Allegra (fexofenadine) can be sedating for a lot of people. Alcohol can make that worse. Don't drink if you are already sleepy. Otherwise try one small drink to see how you feel. Don't have a second if you are too sleepy. Also, don't plan to drive, in case you are too sleepy. And don't drive for at least 1 hour after 1 oz of hard liquor, 1 beer of 8 oz of wine.

Safe?: It is safe as far as your liver will not have more damage than from the alcohol alone. It would not be safe to drive. Have someone else be the designated driver.