Medication Guide
A patient guide to Citalopram, a SSRI antidepressant — how it helps, what it treats, how to take it, and side effects to know about.
Citalopram is a selective serotonin reuptake inhibitor (SSRI) with decades of use in treating depression. By increasing serotonin signaling in the brain, it helps restore mood, motivation, sleep, and appetite, and can ease the anxious rumination that often accompanies depression. Its relatively simple dosing and low interaction burden make it a practical choice for many patients, including those taking other medications.
As with other SSRIs, benefits build gradually. Sleep and appetite often improve first, within 1 to 2 weeks, while mood and interest typically recover over 4 to 8 weeks of daily use. Your prescriber will monitor your progress and may adjust the dose within the recommended limits to optimize your response.
Citalopram is typically prescribed starting at 10 to 20 mg once daily, with a usual maximum of 40 mg per day. For adults over 60 and those with certain liver or heart considerations, the maximum is generally 20 mg daily because higher doses can affect heart rhythm. It may be taken in the morning or evening, with or without food.
Take it at the same time each day. If you miss a dose, take it when you remember unless the next dose is near — then skip it rather than doubling. Do not stop citalopram abruptly; tapering under your prescriber's supervision helps avoid discontinuation symptoms such as dizziness, irritability, and sleep disturbance.
The only way to know whether Citalopram — or any medication — fits your symptoms, history, and goals is a thorough evaluation with a qualified prescriber. Harpal Singh, PMHNP-BC provides comprehensive psychiatric evaluations and ongoing medication management by telehealth across California.
Good to know
At doses above 40 mg daily, citalopram can prolong the QT interval, an electrical measure of heart rhythm, which raises the risk of a dangerous arrhythmia. That is why 40 mg is the usual ceiling, with 20 mg for older adults and certain other groups. Your prescriber may check an EKG if you have heart risk factors.
Escitalopram is the purified active half of the citalopram molecule. They are closely related, and both are effective SSRIs. Some patients respond better or tolerate one over the other, and your prescriber can help decide which is the better fit.
Early improvements in sleep and appetite can appear within 1 to 2 weeks, but mood benefits typically take 4 to 6 weeks, sometimes 8. Staying consistent with daily dosing during this window is important, even if you do not feel different at first.
Citalopram has relatively few drug interactions compared with some antidepressants, but it should not be combined with MAOIs, and caution is needed with other serotonergic drugs and medications that affect heart rhythm. Always give your prescriber a complete, current medication list.
Talk to your prescriber first. Stopping abruptly can cause dizziness, irritability, brain-zap sensations, and flu-like symptoms. A gradual taper over weeks, timed when your life is stable, makes discontinuation much smoother.
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