Taking Celexa with other drugs that make you sleepy or slow your breathing can cause dangerous side effects or death. Ask your doctor before taking a sleeping pill, narcotic pain medicine, prescription cough medicine, a muscle relaxer, or medicine for anxiety, depression, or seizures.
Many drugs can interact with citalopram. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any you start or stop using, especially:
cimetidine;
lithium;
St. John's wort;
tryptophan (sometimes called L-tryptophan);
a blood thinner (warfarin, Coumadin, Jantoven);
any other antidepressant;
heart medication;
medicine to treat a psychiatric disorder; or
"triptan" migraine headache medicine.
This list is not complete and many other drugs can interact with citalopram. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.
 Celexa drug interactions (more detail)
