"cymbalta worked for me for years and then, all of a sudden, just stopped working. this is day 8 of brintellix. suicidal ideation went down significantly but side effects are awful. i&#039;m hungry all the time and thinking about food the minute i finish eating. also, i haven&#039;t read this as a side effect before, but i believe i&#039;m having some sort of allergic reaction as my limbs won&#039;t stop itching. i even took benadryl for a couple of nights but without much relief. is anyone else experiencing a similar side effect."