So I've been taking citalopram 10mg for a little over a year but my anxiety has come back so i went and saw my doctor and he prescribed 30mg amitriptyline to take at night with the citalopram but everything im reading says theres a risk of serotonin poisoning so I'm not sure what i should do he said if it doesn't work out just take 2 of the citalopram but I'm so confused. Help somebody please.