Lexapro and tiredness: what to know

Lexapro can cause tiredness or drowsiness, especially after starting or changing the dose, and your prescriber can help you manage it safely. Lexapro is the brand name for escitalopram, a selective serotonin reuptake inhibitor used for depression and anxiety. Some people feel sleepy, less alert, or low in energy; others notice restlessness or difficulty sleeping instead.

Tiredness may be a temporary adjustment effect as your body adapts to escitalopram. It can also be related to the condition being treated, poor sleep, alcohol, another medicine, or a separate health problem. The timing matters: note whether fatigue began after Lexapro was started, became stronger after a dose change, or occurs alongside dizziness, nausea, low mood, fever, thirst, or changes in sleep. Do not assume every episode of fatigue is caused by the medicine.

If fatigue continues, a clinician may review your dose, other medicines and supplements, sleep, mood, and physical symptoms. Depending on your history, they may also consider conditions such as Anaemia, Dehydration, or Chronic Kidney Disease.

Take Lexapro exactly as prescribed and keep a short record of when you take it, when tiredness appears, and how it affects work, driving, or daily tasks. Until you know how the medicine affects you, avoid driving, cycling in traffic, or operating machinery if you feel sleepy or slowed. Avoid alcohol because it can worsen drowsiness and affect mood.

Ask your prescriber whether taking the medicine at a different time could help, but do not change the schedule or dose on your own. Do not stop Lexapro suddenly; stopping without medical guidance can cause withdrawal symptoms and a return of depression or anxiety. Regular meals, adequate fluids, gentle activity, and a consistent sleep routine may support energy while the issue is assessed.

Contact your prescriber soon if tiredness is severe, does not ease, is getting worse, or makes it unsafe to work, drive, or care for yourself. Seek urgent medical help for fainting, severe confusion, trouble breathing, swelling of the face or tongue, a seizure, or signs of a serious allergic reaction.

Get immediate help if you have thoughts of suicide, self-harm, or harming someone else, or if your mood changes suddenly with unusually high energy, very little sleep, racing thoughts, or risky behaviour. Do not wait for a routine appointment; contact local emergency services or a trusted person who can stay with you.

Ask: Could Lexapro or another medicine be contributing to my fatigue? Is my dose or dosing time suitable? How long should I monitor this effect? What symptoms would mean I need urgent help? Could sleep problems, mood symptoms, Anaemia, or another condition be involved?