Can Zopiclone Cause Weight Gain?

Zopiclone is a commonly prescribed medication used to treat insomnia and other sleep-related problems. While it is generally well tolerated, some people worry that taking Zopiclone might cause weight gain. This article explores whether Zopiclone can affect body weight, how sleep and weight are linked, and what you can do if you notice any changes.

Key Takeaways

Here are the five biggest takeaways from this article about Zopiclone and whether it causes weight gain:

There is limited scientific evidence that Zopiclone directly causes weight gain.
Sleep disturbances and lack of rest can affect hormones that control appetite, which may contribute to weight changes.
Some people may experience an increased or reduced appetite while taking Zopiclone, depending on how it affects their sleep quality and metabolism.
Maintaining healthy habits such as regular exercise, balanced meals and avoiding late-night snacking can help manage weight.
Always speak to a healthcare professional if you notice unexplained weight changes while taking Zopiclone.

Understanding Zopiclone and Its Side Effects

Zopiclone belongs to a group of medicines called hypnotics, which help people fall asleep and stay asleep. It works by acting on the brain to produce a calming effect, allowing for a more restful night’s sleep.

According to the summary of product characteristics published by the MHRA, Zopiclone can cause several side effects, though not everyone will experience them. The most commonly reported include:

A bitter taste
Dry mouth
Drowsiness the next day

Less common effects can include [1]:

Nausea
Headaches
Dizziness
Confusion, particularly in older adults

Weight gain is not listed as a typical side effect in official product information. However, individual responses to medication vary, and sleep quality itself plays an important role in how the body regulates appetite and metabolism.

Does Zopiclone cause weight gain?

There is currently no strong evidence linking Zopiclone directly to weight gain. Research on the connection between sleep medications and body weight has shown inconsistent results. A review on insomnia and weight changes found that the relationship between sleep disturbances, sleep duration and obesity is complex and influenced by many factors such as diet, physical activity and underlying health conditions [2].

In short, Zopiclone does not appear to directly cause weight gain, but the way it affects sleep and daily habits could indirectly influence body weight.

Does lack of sleep cause weight gain?

Yes, poor sleep can have a significant impact on weight management. Research has shown that insufficient sleep alters the balance of hormones involved in hunger and fullness [3].

A study found that people who slept less than seven hours per night were more likely to gain weight compared to those who had plenty of rest. Improving sleep quality could help regulate appetite and support healthy weight management [4].

What To Do if You Notice Weight Changes

If you notice any changes in your weight while taking Zopiclone, it is important not to panic. Here are some ways you can monitor your weight:

Track your habits

Keeping track of your daily habits can help identify what might be influencing your weight. Record your sleep quality, diet and activity levels.

Stay active

Regular physical activity supports both sleep quality and weight management. Even light exercise can make a positive difference.

Eat balanced meals

Focus on nutrient-rich foods that keep you full for longer, such as whole grains, lean proteins, fruits and vegetables.

Avoid late-night snacking

Eating too close to bedtime can affect sleep quality and may contribute to unwanted weight gain.

Speak to a healthcare professional

If your weight changes drastically or you are concerned about side effects, contact your GP or pharmacist.

When should I speak to a doctor?

Contact your GP or prescriber if:

You notice ongoing weight changes not linked to diet or activity.
You feel unusually hungry, tired, or unwell while taking Zopiclone.
You experience other side effects that concern you.

Your doctor may adjust your dose, review other medications, or suggest lifestyle changes to help manage your symptoms safely.

Final Thoughts

Zopiclone is not known to cause weight gain. While some people may notice minor changes in appetite or lifestyle, these are usually short-term and related to improved sleep, not the medication itself.

If you’re concerned about weight changes while taking Zopiclone, speak to your doctor. They can help balance your sleep with your overall health goals.

Good sleep, regular activity and a healthy diet remain the best ways to support your wellbeing while using Zopiclone.