{"id":623068,"date":"2026-06-05T17:53:08","date_gmt":"2026-06-05T17:53:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/623068\/"},"modified":"2026-06-05T17:53:08","modified_gmt":"2026-06-05T17:53:08","slug":"medications-to-avoid-with-myasthenia-gravis","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/623068\/","title":{"rendered":"Medications To Avoid With Myasthenia Gravis"},"content":{"rendered":"

If you have myasthenia gravis<\/a> (MG), your team may have warned you that some common medications can affect how well your muscles work.<\/p>\n

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\u201cMany medications can exacerbate myasthenia gravis symptoms,\u201d says neurologist Georgette Dib, MD<\/a>. \u201cThat doesn\u2019t mean you can\u2019t ever take them. We just need to manage them more carefully.\u201d<\/p>\n

Knowing what may cause problems \u2014 and when to talk with your healthcare provider \u2014 can help you stay safer and avoid unnecessary flare-ups.<\/p>\n

Why some medications affect myasthenia gravis<\/p>\n

MG disrupts communication between your nerves and muscles, and certain medications and supplements can further complicate things.<\/p>\n

The effects can range. Some medications can add to fatigue. Others can have more serious symptoms, like worsening troubles with swallowing or breathing.<\/p>\n

That\u2019s why it\u2019s important to tell every healthcare provider you see that you have MG \u2014 especially before starting a new medication or having surgery.<\/p>\n

\u201cYou want providers to know about your condition so they can choose medication accordingly,\u201d Dr. Dib states. \u201cWe recommend that people with myasthenia gravis carry a medical ID card or wear a medical alert bracelet. That way, even in an emergency, they can get the treatment that\u2019s safest for them.\u201d<\/p>\n

Medications that may worsen myasthenia gravis<\/p>\n

Some people will tolerate certain medications well, while others may find they worsen their symptoms.<\/p>\n

Still, Dr. Dib says there are several medication categories that deserve extra caution. She shares some common ones.<\/p>\n

Magnesium<\/p>\n

Magnesium<\/a> is often a big concern for people with MG.<\/p>\n

\u201cMagnesium can worsen myasthenia and exacerbate symptoms by working on the neuromuscular junction,\u201d Dr. Dib explains. In other words, high doses of magnesium can exacerbate the already-troubled communication between your nerves and muscles.<\/p>\n

The biggest offender is intravenous (IV) magnesium. It\u2019s sometimes used in hospitals for conditions like preeclampsia, heart rhythm issues or severe magnesium deficiency.<\/p>\n

Some people may tolerate over-the-counter magnesium supplements in small doses. But Dr. Dib advises avoiding them unless your healthcare provider specifically recommends them, especially if your myasthenia symptoms aren\u2019t well managed.<\/p>\n

She adds that magnesium may hide in over-the-counter products, like:<\/p>\n

LaxativesAntacidsMultivitamins and other combined supplements<\/p>\n

Unless your provider says otherwise, you shouldn\u2019t need to worry about magnesium naturally found in foods<\/a>.<\/p>\n

\u201cYou\u2019re unlikely to eat so much magnesium-rich foods that it affects your condition,\u201d Dr. Dib clarifies. \u201cBut it\u2019s certainly easy to get too much when you take supplements.\u201d<\/p>\n

Antibiotics<\/p>\n

Certain antibiotics<\/a> are known for worsening MG symptoms. They include:<\/p>\n

Fluoroquinolones, like ciprofloxacin (Cipro\u00ae), which is often used for urinary tract infections and respiratory issuesMacrolides, like azithromycin (Z-Pak\u00ae), commonly prescribed for respiratory infectionsAminoglycosides, like gentamicin, which is typically used for more serious bacterial infections, like sepsis and meningitisPenicillin<\/a> can be used to treat a range of bacterial infections, including strep throat, ear infections and more<\/p>\n

If you have an infection that needs antibiotics, your provider may recommend other ones if they\u2019re likely to do the trick. But sometimes, even the antibiotics that aren\u2019t necessarily recommended for myasthenia gravis are still your best treatment option.<\/p>\n

\u201cIf the medication is needed, especially for infections, we manage the myasthenia symptoms while treating the infection,\u201d Dr. Dib explains.<\/p>\n

Beta-blockers and calcium channel blockers<\/p>\n

Beta-blockers<\/a> and calcium channel blockers<\/a> are medications used to treat high blood pressure and heart rhythm conditions. And they may worsen muscle weakness in MG.<\/p>\n

But they\u2019re common medications. And lots of people, including people with myasthenia gravis, need them to help manage their heart health.<\/p>\n

In those cases, your provider will work with you to treat your heart while balancing risks carefully.<\/p>\n

\u201cThere are ways to lower the impact on MG symptoms,\u201d Dr. Dib says. \u201cIf they\u2019re needed, we can adjust your MG treatment and monitor symptoms closely.\u201d<\/p>\n

Statins<\/p>\n

Statins<\/a> are medications used to lower cholesterol. They can worsen, or even cause, MG symptoms.<\/p>\n

\u201cVery rarely, statins can either trigger myasthenia gravis, or people can get myasthenia symptoms for the first time from statins,\u201d Dr. Dib says.<\/p>\n

But if you need statins, there are ways to lower the risk. Providers may recommend:<\/p>\n

Starting with a lower doseCombining lower-dose statins with other cholesterol medicationsMonitoring symptoms carefullyBotox<\/p>\n

Botulinum toxin injections (Botox\u00ae<\/a>) can be risky for people with MG.<\/p>\n

\u201cWe definitely recommend avoiding Botox because it\u2019s a neuromuscular blocker,\u201d Dr. Dib explains. That means Botox blocks nerve signals to your muscles. In people with MG, this can significantly worsen weakness and other symptoms.<\/p>\n

Botox is perhaps best known for its cosmetic uses. But it\u2019s also used as treatment for a range of concerns, including:<\/p>\n

SpasticityTMJ painOveractive bladderExcessive sweatingMigraines<\/p>\n

If you have myasthenia gravis, your providers can recommend other treatments for these conditions.<\/p>\n

Certain anesthesia medications<\/p>\n

Certain anesthesia medications can also create risks for people with MG. Some muscle-relaxing drugs used during surgery may dangerously worsen breathing problems.<\/p>\n

When appropriate, local anesthetics are often safer options. Medications like propofol and sevoflurane, for example, are relatively safe in myasthenia gravis.<\/p>\n

If you need to be fully sedated, make sure your anesthesiologist and surgeon know you have myasthenia gravis.<\/p>\n

Supplements and herbal remedies<\/p>\n

Over-the-counter herbs and supplements may seem harmless. But they\u2019re loosely regulated and Dr. Dib says most haven\u2019t been studied well in people with MG.<\/p>\n

\u201cI don\u2019t personally recommend supplements,\u201d she states. \u201cThere\u2019s just too much we don\u2019t know about them.\u201d<\/p>\n

She advises extra caution with:<\/p>\n

High-dose zinc supplements\u201cImmune-boosting\u201d productsHerbal blends or mushroom-based supplementsProducts containing quinine<\/p>\n

\u201cThere\u2019s always the risk of toxicity or worsening myasthenia symptoms,\u201d she continues. \u201cThe benefits don\u2019t outweigh the potential risks.\u201d<\/p>\n

If you\u2019re considering adding a supplement to your routine, discuss it first with your healthcare providers.<\/p>\n

Final thoughts<\/p>\n

The list of medications to avoid with myasthenia gravis can be long. And it\u2019s complicated. There are a lot of nuances and considerations to be made when choosing the right medications.<\/p>\n

Never stop or avoid prescribed medications on your own because of MG concerns. Instead, talk with your neurologist, pharmacist or other healthcare provider if:<\/p>\n

You\u2019re starting a new medication.You notice worsening weakness.You develop swallowing difficulties.You feel more short of breath than usual.<\/p>\n

With careful monitoring and communication, you can rest assured that you\u2019ll safely receive the treatments you need to manage your health, not just your MG.<\/p>\n","protected":false},"excerpt":{"rendered":"If you have myasthenia gravis (MG), your team may have warned you that some common medications can affect…\n","protected":false},"author":2,"featured_media":623069,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[102,6591,56,54,55],"class_list":["post-623068","post","type-post","status-publish","format-standard","has-post-thumbnail","category-medication","tag-health","tag-medication","tag-uk","tag-united-kingdom","tag-unitedkingdom"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/623068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=623068"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/623068\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/623069"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=623068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=623068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=623068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}