Homepharmac Which one of the following is usually given once a day.. Piroxicam Which one of the following is usually given once a day: A) Piroxicam*** B) Naproxen C) Diflunisal D) Ibuprofen. Facebook Twitter Share:Which one of the following is usually given once a day.. Piroxicam Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email