What to do if you experience side effects?
In case of side effects after taking 20 mg of Citalopram, or any other quantity of it, do not be afraid. If the side effect you experience is mild, you should just keep in touch with your doctor. He will calm your side effects by changing the dosage of Citalopram or just change the medicine. In case of wild side effects you should not wait for the doctor bur rather should call the emergency room to get quick medical attention. Maybe Citalopram is a very wrong medicine in your case.