Hi, yes i had this problem two night ago, as i have exams these days i started taking two tab fish oil 1000 frm last month, two night ago i had a really bad anxiety attack, im not well yet still get some mild attack at night and j have my final exam, but they gave me propronolol because of my fast heart rate and colodiazpem to make ms sleep, now i can concentrate for study is soooo hard, i think it all could be because of that fish oil tab, bac timing for me tho ...