The usual adult oral dosage of citalopram for depression is 20 milligrams once a day, and the dose is increased to 40 milligrams if a doctor deems it necessary, reports Drugs.com. Citalopram is not permitted for use in children. Consult a doctor for anyone under 18 needing depression treatment.
Citalopram is a class of drugs called selective serotonin reuptake inhibitors, and they affect the neurotransmitters in the brain, notes MedicineNet. Citalopram has several side effects including agitation, blurred vision, confusion, lack of emotion and menstrual changes, states Drugs.com. If an individual is taking pimozide or methylene blue injections, do not take citalopram.