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 are the Side Effects of Magnesium?

Anna T.
Updated Mar 03, 2024
Our promise to you
TheHealthBoard 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 TheHealthBoard, 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.

Some of the side effects of magnesium include low blood pressure, diarrhea, and breathing problems. There are also some magnesium side effects that may impact the nervous system and the brain. Side effects are usually only present when a person has taken more magnesium than needed. It is also likely that a person will experience other types of problems if he or she becomes deficient in magnesium. This element is essential to a person's survival, but either too much or too little of it will usually do more harm than good.

Magnesium serves many important purposes inside the body, including maintaining a stable blood pressure and heartbeat. Most people get enough of it every day, because it is present in so many different foods, including tea, cocoa, and most dark green vegetables. Supplements are occasionally needed for people who do become deficient in magnesium, and they typically cause no problems if they are taken as directed. Any amount over 350 mg of magnesium in supplement form is considered too much, but a person should talk to his doctor to be sure of the amount he needs. If too much is taken, a person may experience side effects of magnesium.

Too much magnesium can have a negative impact on the heart, causing low blood pressure and an irregular heartbeat. The irregular heartbeat could be an irreversible problem if a person has taken an amount well over the recommended dosage and might result in death. Additionally, a person who does not have an adequate amount of magnesium in her system may also experience an irregular heartbeat. Gastrointestinal difficulties are other common side effects of magnesium and may include nausea, diarrhea, and vomiting if a person has taken too much. These problems also tend to result if a person is deficient in magnesium.

Other complications resulting from too much magnesium include respiratory problems, seizures, and sudden changes in a person's personality. Magnesium supplements may be helpful for people who suffer from ADHD (attention deficit hyperactivity disorder) and multiple sclerosis, and most over-the-counter antacids contain lots of magnesium. The fact that antacids contain magnesium and are often abused by many people might be a concern. People who take antacids more than a few times a day on a regular basis may need to either cut back on how much they take or see their doctor to determine if there is an underlying problem requiring excessive use of antacids. Overuse of antacids, laxatives, and other such related products may be one of the leading causes of magnesium overdose.

TheHealthBoard 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.
Anna T.
By Anna T.
Anna Thurman is a skilled writer who lends her talents to TheHealthBoard. Her ability to research and present information in an engaging and accessible manner allows her to create content that resonates with readers across a wide range of subjects.

Discussion Comments

By anon959284 — On Jul 03, 2014

@ZipLine, yes I have experienced exactly that.

By ysmina — On May 07, 2013

@SarahGen-- No, I have never had those side effects. I have experienced nausea, diarrhea and heart palpitations but never skin problems.

Do you know what type of magnesium the supplement contains? There are several different types and I know that magnesium oxide causes side effects more than the others.

There may also be additional ingredients in the supplement that you are allergic to because it sounds like you're experiencing a type of skin rash. You should stop taking them immediately.

By SarahGen — On May 07, 2013

Has anyone experienced dry skin and dermatitis as magnesium supplement side effects?

By ZipLine — On May 06, 2013

My blood tests showed that I am deficient in magnesium last year. Since then, I've been taking a magnesium supplement, the supplement has 600mg of magnesium.

I didn't have any problems the first several months I started taking it but after that, it started giving me diarrhea. So now, I only take the supplement once a week. This is enough and doesn't cause any side effects.

Anna T.

Anna T.

Anna Thurman is a skilled writer who lends her talents to TheHealthBoard. Her ability to research and present information in an engaging and accessible manner allows her to create content that resonates with readers across a wide range of subjects.
TheHealthBoard, in your inbox

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

TheHealthBoard, in your inbox

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