We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Lopressor®?

By A. Rohlandt
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Lopressor® is the brand name used by Novartis Pharmaceuticals for the drug metoprolol succinate. This is a drug belonging to a class of agents known as beta blockers, which are commonly prescribed for high blood pressure treatment and other cardiovascular conditions. It may also be marketed under the name Toprol-XL®.

Beta blockers work by inhibiting the body’s reaction to adrenaline and epinephrine. The invention of beta blockers in 1958, and the subsequent application of them to practical medicine by Sir James Black were hailed as a major milestone in medicine. In fact, he won a Nobel Prize in Medicine in 1988 for his work with beta blockers.

In addition to treating high blood pressure, Lopressor® is also approved for the treatment of irregular heartbeat, chest pain, and migraine prevention. It is routinely given as part of therapy after a heart attack or heart failure. Its primary method of action is to slow the heart rate and relax the blood vessels, thereby reducing blood pressure. A common off label use is to treat patients with panic or anxiety disorders.

As with all hypertension medications, Lopressor® should only be started or discontinued under the direction of a physician. It is usually taken twice a day with or immediately following a meal. Metoprolol tartrate is a form of Lopressor® that is formulated for long-acting or extended-release use. In contrast to the regular formulation, it is designed to be taken once per day. It is marketed as Toprol-XL®.

Some of the transient and less serious side effects of the drug may include fatigue; drowsiness; and a feeling of being lightheaded, especially upon standing. It has been recommended that until one becomes used to the medication, he should not drive or operate machinery. Diabetics may experience changes in blood sugar control while taking this medication as well.

Serious side effects may include a worsening of chest pain or symptoms of heart failure. Cyanosis, or bluish tints to fingers, skin or lips; persistent dizziness; slow or irregular heartbeat; or tingling of the hands or feet are not to be tolerated for any length of time, as these symptoms may indicate a serious medical problem. Immediate medical treatment is recommended in this event.

Taking an excessive amount of Lopressor® can cause hypotension, or low blood pressure, due to bradycardia. Bradycardia is a condition in which the heart rate is below 50 beats per minute. It may also result in seizures or respiratory arrest. In diabetics, an overdose may result in metabolic acidosis, wherein the blood becomes more acidic due to changes in the body’s use of sugar.

Because of Lopressor’s® effects on the body, diabetics and persons with thyroid or breathing problems should notify their physicians before starting the medication. It is also important to discuss allergies and any other medications, including over-the-counter or herbal supplements, with one’s physician.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.