Can brintellix cause stomach pain. I have been on it for one month. First 20 mg then down to 10mg but I have stomach pain most of the day. I do also suffer from chronic nausea and take 1 mg 4 times daily of xanax, prevacid 30 mg twice a day, gapabentin 100 mg 3 times per day, hyroxyzine 12.5 mg 4 times per day , 7.5 mg of remeron, 50 mg of trazadone, 25 mg of phenergan 4 times per day