Common and Rare Side Effects of Lexapro (Escitalopram): What You Should Know

Lexapro (escitalopram) is a widely prescribed antidepressant used to treat depression and generalized anxiety disorder. As part of the selective serotonin reuptake inhibitor (SSRI) class, it works by increasing serotonin levels in the brain, helping regulate mood and emotional stability.

While Lexapro is generally well-tolerated, it can cause side effects that range from mild and temporary to rare but serious. Understanding these effects can help you use the medication safely and know when to seek medical advice.

How Lexapro Affects the Body

Lexapro enhances serotonin activity in the brain, which improves mood but may also affect other bodily systems. This is why side effects can occur, especially during the first few weeks of treatment or after dose changes.

Common Side Effects of Lexapro

Many people experience mild side effects when starting Lexapro. These usually improve as the body adjusts to the medication.

Most Frequently Reported Effects

• Nausea
• Headache
• Dry mouth
• Increased sweating
• Fatigue or drowsiness
• Insomnia (difficulty sleeping)
• Dizziness
• Sexual dysfunction (reduced libido, delayed orgasm)

These side effects are typically temporary and may subside within 1–2 weeks of consistent use.

Less Common but Noticeable Side Effects

Some users may experience effects that are not as common but still worth monitoring:

• Weight changes (gain or loss)
• Digestive issues (constipation or diarrhea)
• Anxiety or restlessness at the beginning of treatment
• Yawning frequently
• Mild tremors

If these symptoms persist or worsen, consult your healthcare provider.

Rare but Serious Side Effects

Although uncommon, certain side effects require immediate medical attention.

1. Serotonin Syndrome

A potentially life-threatening condition caused by excessive serotonin levels.

Symptoms include:

• Rapid heart rate
• High fever
• Confusion
• Muscle stiffness
• Shivering

2. Suicidal Thoughts or Behavior

Some individuals—especially younger patients—may experience increased suicidal thoughts when starting antidepressants.

3. Severe Allergic Reactions

• Rash
• Swelling of the face or throat
• Difficulty breathing

4. Low Sodium Levels (Hyponatremia)

More common in older adults, symptoms may include:

• Headache
• Confusion
• Weakness
• Seizures (in severe cases)

5. Abnormal Bleeding

Lexapro may increase the risk of bleeding, especially when combined with blood thinners or NSAIDs.

Long-Term Side Effects of Lexapro

Most people tolerate Lexapro well over time, but some long-term effects may occur:

• Persistent sexual dysfunction
• Weight gain
• Emotional blunting (feeling less emotionally reactive)
• Sleep disturbances

Regular follow-ups with your doctor can help monitor and manage these effects.

Who Is More Likely to Experience Side Effects?

Certain individuals may be more sensitive to Lexapro, including:

• Older adults
• People with liver or kidney conditions
• Those taking multiple medications
• Individuals sensitive to SSRIs

Personalized medical advice is essential for minimizing risks.

How to Manage Lexapro Side Effects

Here are practical ways to reduce discomfort:

• Take medication at the same time daily
• Avoid alcohol, which may worsen side effects
• Stay hydrated and maintain a balanced diet
• Give your body time to adjust before making changes
• Never stop the medication abruptly

When to See a Doctor

Seek medical attention if you experience:

• Severe or worsening symptoms
• Signs of serotonin syndrome
• Suicidal thoughts
• Allergic reactions
• Persistent side effects that interfere with daily life

Final Thoughts

Lexapro (escitalopram) is an effective treatment for depression and anxiety, but like all medications, it comes with potential side effects. Most are mild and temporary, but rare complications can occur.

Understanding the difference between common and serious side effects empowers you to use Lexapro safely and get the most benefit from your treatment.

FAQs 

1. How long do Lexapro side effects last?

Most common side effects improve within 1 to 2 weeks as your body adjusts. However, some effects like sexual dysfunction may last longer.

2. Is it normal to feel worse before feeling better on Lexapro?

Yes, some people may experience increased anxiety or discomfort during the first few days or weeks before improvement begins.

3. Can Lexapro cause weight gain?

Yes, weight changes can occur, although not everyone experiences this side effect.

4. Are Lexapro side effects permanent?

Most side effects are temporary, but a few—such as sexual dysfunction—may persist in some cases.

5. What should I avoid while taking Lexapro?

Avoid alcohol, recreational drugs, and combining medications without medical advice, as these may increase risks.

6. Can I stop taking Lexapro suddenly?

No, stopping abruptly can cause withdrawal symptoms. Always taper off under medical supervision.