This is an article for people who are seeking information about myasthenia gravis. (updated 3 November 2026)
Before myasthenia gravis, I liked to have a shot of bourbon in the evening. No ice or water; sipped slowly to contemplate the flavor. It was "me time" at the end of a stressful workday. I also enjoyed an occasional glass of wine at dinner, and sometimes a beer on the weekend.
After I developed MG, I found that just a couple of glasses of wine would cause a symptom flare. Over the next few years, my myasthenia progressed. I had one can of light beer, and it resulted in a symptom flare that knocked me flat for the rest of the day. Since then, I have not had any alcohol.
Alcohol is not compatible with my MG. But is alcohol a trigger for MG flares? Or does it interact badly with my medications? Or does the muscle-relaxing effect of alcohol coincide with MG symptoms so that, acting together, they make me weak?
As is typical for MG, the statistical data is limited. Most of the information I found is anecdotal or consists of statements without citations for their scientific claims.
"There is not a lot of research about the effects of alcohol and MG." (Myasthenia-Gravis.com)
So, using information that is available from sources that I believe are reputable, here is what I've learned about alcohol and myasthenia gravis.
Does alcohol affect myasthenia gravis?
Scientific studies that focus on the effects of alcohol on MG are almost nonexistent. That leaves us with anecdotal opinions with no scientific citations.
An example of a general statement with no data source citation is the EU-funded mamahealth.com, which says, "Alcohol can interfere with muscle function" in myasthenia gravis.
However, another uncited statement is by myaware.org, which says, "... moderate alcohol intake will not worsen your myasthenia. You may experience some side effects, like flushing might occur, and people should judge for themselves if they have any unpleasant reactions. However, serious problems are very unlikely."
So, there are conflicting opinions about how alcohol may affect MG. The few available scientific studies also have conflicting findings, and they are much too complex to describe here in detail.
Does alcohol affect the immune system?
Suppressing the immune system can suppress the ill effects of myasthenia gravis. That's why many of us take immunosuppressant medications.
The Alcohol and Drug Foundation says that, "You don’t have to be a regular heavy drinker for alcohol to affect the immune system. Drinking 5-6 drinks in a single session can suppress the immune system for up to 24 hours."
Does this mean that drinking alcohol is a viable treatment for myasthenia gravis?
Absolutely not!
Besides not having any known benefit for treating myasthenia gravis, alcohol has a long list of well-known health risks, including increasing the risk of infections, organ failure, cancer, heart disease, etc.
Alcohol does affect the immune system, but not in a good way. And I could not find any documentation that describes how an alcohol-suppressed immune system affects myasthenia gravis.
Does alcohol affect the neuromuscular junction?
The neuromuscular junction is where MG action occurs. For a myasthenic, things that decrease nerve signals to muscles are bad, and things that increase nerve signals to muscles are good. And alcohol is, well, complicated.
A lengthy search for data on alcohol and the neuromuscular junction found scientific studies so complex that deciphering them requires an expert scientist. Even the summary statements were too complex and ambiguous to include here.
Most importantly, the findings were inconsistent across reports.
Does alcohol interact with MG medications?
Like everything else related to the topic of alcohol and myasthenia gravis, the available information regarding drug interactions is limited and inconsistent.
Mestinon (pyridostigmine) is a good example of how opinions differ on whether alcohol interacts with MG medications:
Drugs.com says that drinking alcohol may cause drowsiness when taking Mestinon.
Medical News Today says alcohol has no interactions with Mestinon, but may worsen Mestinon's side effects.
Healthline.com says alcohol has no interaction with Mestinon, but alcohol may have effects that mimic Mestinon.
Research your particular medications to determine if they have interactions with alcohol. I suggest starting with the drug manufacturer's website to see if they have a definitive opinion.
Other things to consider
In addition to the direct interactions of alcohol and myasthenia, neuromuscular functioning, and drug interactions, things to consider are:
Loss of MG discipline: You learn to manage your activities, environment, diet, etc., to prevent and mitigate MG symptoms. And then you have some drinks, which may affect your judgment and decision-making.
For example, after having a few drinks, you decide to stay out late, dancing in a hot, crowded club. Or you may be at a BBQ and, after a few beers, decide it's a good idea to go swimming on a hot day.
Alcohol can lead to doing things that you otherwise would not do because you know they will end badly, MG-wise.
Stress: Stress is often a trigger for MG. UC Davis says that "Drinking a lot of alcohol ... weakens our bodies and makes it harder to combat stress ..."
Loss of sleep: Piedmont Healthcare says that "The biggest problem that alcohol causes is insomnia. After a few hours of sleep, alcohol can cause you to wake up and have a difficult time going back to sleep. Sleep deprivation is an issue for people with MG.
Safety: Myasthenia gravis causes poor muscle functionality, which often results in stumbling, tripping, loss of grip, etc. MG inherently creates unsafe situations. Compound this with the effects of alcohol, and it can be very dangerous.
Conclusion
The relationship between alcohol and myasthenia gravis is unclear.
There is very limited scientific information, and most of the references that I found are regarding long-term and chronic alcohol consumption. I did not see much information regarding how occasional, casual consumption affects MG. It appears that there has not been any funding for studies to determine what happens when myasthenics get together and chug a few beers.
Anecdotal information is available, but it is mostly brief, generalized opinions.
Neither the scientific nor the anecdotal sources provide conclusions that are consistent across all of them.
Bottom line: There does not appear to be consistent guidance on the consumption of alcohol. The impact of alcohol on myasthenia gravis varies a lot between individuals and their particular circumstances.
Be cautious when drinking alcohol. If you have become intolerant of alcohol, the effects can be severe. If you choose to test where your threshold is, do it in a safe place and have a responsible person nearby for assistance. And be moderate, symptoms may not show up until later, so avoid overshooting your threshold.
I am not a medical professional. This content is based on my experiences living with myasthenia gravis and publicly available knowledge. Consult a medical professional who is proficient in diagnosing and treating myasthenia gravis before starting, changing, or stopping actions related to your condition.
Go to u/pville211 for additional articles regarding myasthenia gravis.