Starting an antidepressant can bring practical questions about sleep, appetite, and body weight. If you have been prescribed Lexapro, you may be wondering whether the medication could cause the number on the scale to rise.

The direct answer is that Lexapro can be associated with weight gain, but not everyone who takes it gains weight. When weight changes occur, they are often modest, and several factors other than the medication may contribute.

What Is Lexapro?

Lexapro is the brand name for escitalopram, a selective serotonin reuptake inhibitor, or SSRI. It is approved to treat major depressive disorder and generalized anxiety disorder. SSRIs affect serotonin signaling in the brain, which may help improve mood and reduce anxiety symptoms.

Weight gain is not listed among the most common adverse reactions in the current FDA prescribing information for Lexapro. However, longer-term research suggests that some people may experience an increase in weight while taking escitalopram.

A large 2024 observational study compared weight changes among people starting eight commonly prescribed antidepressants. Escitalopram was associated with slightly more average weight gain at six months than sertraline and a somewhat greater likelihood of gaining at least 5% of starting body weight. The differences between medications were generally small, and the study could not prove that the medication caused every weight change.

Why Might Weight Change During Treatment?

Weight changes during antidepressant treatment can have more than one explanation. Some people regain their appetite as depression improves. Others may experience changes in food choices, sleep, activity levels, or fluid retention. Depression itself can also affect appetite and body weight, making it difficult to determine how much of a change is caused by Lexapro alone.

Your response may also depend on how long you take the medication, your starting weight, other medications, age, health conditions, and daily habits. A person who gains weight on Lexapro may not have the same response to another antidepressant, and another person may experience no noticeable change.

What Should You Do About Lexapro Weight Gain?

Consider recording your weight before treatment and checking it periodically under similar conditions, such as at the same time of day. Regular meals, nutritious food choices, sufficient sleep, and physical activity appropriate for your health may also support weight management.

Speak with your healthcare provider if weight gain is rapid, persistent, or distressing. Your provider can review possible causes and discuss whether changes to your treatment are appropriate. Do not reduce your dose, switch antidepressants, or stop Lexapro on your own. Stopping suddenly can cause discontinuation symptoms, and depression or anxiety symptoms may return.

When Is the Best Time to Take Lexapro?

Lexapro is taken once daily and may be taken in the morning or evening, with or without food. Taking it at approximately the same time each day can make missed doses less likely.

The best time depends partly on how the medication affects you. A morning dose may be more comfortable if Lexapro interferes with sleep. An evening dose may be considered if it makes you drowsy. Ask your healthcare provider or pharmacist before changing your dosing schedule so that you do not take doses too close together or leave an unusually long gap.

Lexapro is available only by prescription. Canada Drugs Direct lists brand-name Lexapro and generic escitalopram in several strengths, with orders reviewed by licensed pharmacists before dispensing. Product availability and the appropriate strength depend on your prescription and pharmacy review.

Weight gain is possible with Lexapro, but it is not guaranteed and may be influenced by several factors. Your healthcare provider can help you compare the mental health benefits of treatment with any side effects you experience. This article is for general educational purposes and does not replace professional medical advice.

How soon can Lexapro cause weight gain?

There is no set timeline. Some people notice appetite or weight changes within the first few months, while others experience changes only after longer treatment or do not gain weight at all.

Does Lexapro increase appetite?

It may affect appetite in some people. Appetite can also increase when depression improves, so the change may not be caused solely by the medication.

Will Lexapro make everyone gain weight?

No. Individual responses vary, and many people do not experience a meaningful increase in weight.

Can I stop Lexapro if I am gaining weight?

Do not stop Lexapro suddenly or change your dose without speaking with your healthcare provider. Your provider can assess other possible causes and discuss treatment options with you.

Should Lexapro be taken in the morning or at night?

Either is permitted. Morning dosing may be considered when the medication affects sleep, while evening dosing may suit someone who becomes drowsy. Follow the schedule recommended by your prescriber.