If you’ve ever been prescribed a medicine called metoprolol, you may have heard about or experienced weight gain as a side effect.
Concerned about your weight? You aren’t alone. Close to 3 in 4 adults aged 20 and over are overweight or obese, according to the Center for Disease Control and Prevention.
Obesity increases the risk of numerous diseases, including heart disease, diabetes, and some cancers. Many people taking metoprolol may already be overweight or have risk factors for diseases.
This article will answer some common questions about metoprolol and weight gain.
What is Metoprolol?
Metoprolol is a beta-blocker, a class of medications prescribed for high blood pressure.
It’s available by prescription as a tablet and as a long-acting (extended-release) tablet.
Metoprolol works by slowing your heartbeat and relaxing blood vessels. This improves blood flow and reduces blood pressure.
Metoprolol is often prescribed for high blood pressure, also known as hypertension.
The medicine is also sometimes used for irregular heartbeat, migraine headaches, and for movement disorders caused by some psychiatric medications.
Metoprolol and Weight Gain
Metoprolol can cause weight gain as a side effect. Studies have shown that people taking metoprolol gain a median of 2.64 pounds compared to people who aren’t.
Weight gain caused by metoprolol typically occurs within the first few months of taking it. After that, any gains tend to level off as your body adjusts.
Curious how metoprolol causes people to gain weight? While experts are unsure why, there are a few possible factors.
It may be caused by changes to your metabolism that affect how your body processes fats and how insulin affects the cells that store and release sugar.
Another reason experts think metoprolol may cause weight gain is fatigue.
When you take beta-blockers, it can make you less energetic and less likely to move around, which can lead to putting on weight.
Metoprolol is thought to cause you to gain more abdominal fat, which is related to problems with high cholesterol.
Other Beta Blockers That Cause Weight Gain
Metoprolol isn’t the only beta-blocker that can cause weight gain – atenolol and propranolol can cause it too.
However, some beta-blockers don’t appear to cause weight gains, such as timolol, acebutolol, and carvedilol.
A study on people with type 2 diabetes taking metoprolol for high blood pressure compared to another newer beta-blocker, carvedilol, found that carvedilol didn’t cause weight gain, but metoprolol did.
The reasons your healthcare provider may choose one beta-blocker over another can vary depending on your individual health needs.
If you’re prescribed a beta-blocker and are concerned about gaining weight, don’t hesitate to talk to your doctor.
How Much Weight Gain is Too Much?
People who take metoprolol and have weight gain as a side effect tend to gain around two to three pounds over a few months.
However, if you’re taking metoprolol for heart failure, a sudden weight gain can mean that fluid is building up if your heart failure is getting worse.
Reach out to your healthcare provider if you gain more than two to three pounds in one day or five pounds in one week.
Tips for Losing Weight on Beta-Blockers
Even modest weight loss can improve your health dramatically. Losing just 5-10% of your body weight can reduce your risk for heart disease, stroke, and diabetes.
If you have high blood pressure and you’re overweight, losing a few pounds can help with your blood pressure and cholesterol.
Healthy weight loss isn’t always just about diet – it’s also about long-term health habits, including:
- Stress reduction
A healthy eating plan stays within your calorie needs and is rich in fruits, vegetables, whole grains, and low-fat dairy products.
Protein from a variety of sources is best, such as:
- Lean meats and poultry
- Soy products
Sugars, sodium, and fats should be limited. Stick to water instead of high-calorie or sweetened beverages.
Some drinks can help with blood pressure too, such as tomato juice and beet juice.
Physical activity is good for maintaining a healthy weight and overall health. It can help reduce the risk of high blood pressure, type 2 diabetes, heart attack, stroke, and even some forms of cancer.
Exercise also can help with arthritis, bone health, and mental health.
If you want to lose weight, it’s best to combine exercise with healthy changes in nutrition.
To maintain your healthy weight, experts recommend that you work your way up to 150 minutes of moderate-intensity exercise, 75 minutes of vigorous-intensity exercise, or an equivalent mix of the two every week.
Smoking cigarettes harms every part of the body. If you use tobacco, one of the best things you can do for your health is to quit.
Smoking also increases the risk for tuberculosis, certain eye diseases, and immune system problems.
It’s never too late to quit smoking, and there are medications available that can help. Reach out to your healthcare provider for support.
If you have high blood pressure and are prescribed medication to treat it, your doctor will talk to you about the reasons they choose a particular medication and why that’s right for you.
If you’re concerned about weight gain, you should mention this to your doctor to see if there is a different option that would also work for you.
Metoprolol can cause weight gain, but some other beta-blockers don’t appear to cause weight gain, such as timolol, acebutolol, and carvedilol.
Beta-blockers aren’t the only medications used for high blood pressure.
Another class of medications called angiotensin-converting enzyme (ACE) inhibitors – such as enalapril, lisinopril, and ramipril – don’t cause weight gain.
Angiotensin II receptor blockers (ARBs) are also commonly prescribed for high blood pressure, including telmisartan, losartan, olmesartan, irbesartan, and valsartan. These medications don’t cause weight gain.
Calcium channel blockers are another class of drugs used for blood pressure that doesn’t cause weight gain, including amlodipine and diltiazem.
When to See a Healthcare Provider
Tell your healthcare provider if you suddenly gain more than two to three pounds in one day or five pounds in one week.
If you’re taking a beta-blocker for heart failure, weight gain can be a sign that fluid is building up in your body.
This can indicate your heart failure is getting worse, and your doctor will need to evaluate you to determine the cause.
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Frequently Asked Questions
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Hypothesis: Beta-adrenergic receptor blockers and weight gain: A systematic analysis. (2001).
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