AF Association
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Hi I am new to site have had A F for 7 years and had a stroke in January doing well and now on the new blood thinner rivaroxaban . I am on waiting list for ablation which is seven months wait so still not sure what to do. In the meantime would like to try magnesium but don't want it to upset my stomach as blood thinner won't be effective. Could anyone please tell me what magnesium I should try was going to order it from Healthspan 375 mg with added b vitamins. Would really appreciate any advice.

12 Replies

Thank you for reply I meant that not the risk of bleeding through taking just if I got an upset stomach then rivaroxaban maybe flushed out stomach and worried as I am 55 and already had a stroke. I want to give it a try as my A F is happening once a week now for 20 hours at a time. What is magnesium called and what does age is good to take?


Thank you will look on link


There has been many posts and threads on Magnesium, many people on this site find it can help but I would urge you to also talk to your doctors before starting taking any supplements. Without knowing your history, no one on this site can say whether or not it would be good for you, you must do your own research and check out the risks/benefits for yourself.

I posted 2 links quite recently, 1 on the PatientUK site which is a very informative article on both hypermagnesia & hypomanesia, just scroll back about 10 days or do a thread search for magnesium.

Personally, I cannot take any oral Magnesium even as an ingredient in prescribed meds because is exacerbates an autoimmune disease I also have. That is not to say it may be perfectly OK for you.

bigleg has researched this topic thoroughly and has suggested some good leads for you to follow up.

Best wishes

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As an addendum - try this link for comparing magnesium supplements:


another add on - according to the Cleveland Clinic of Wellness - on using Magnesium for Migraines - quote


Magnesium can bind and prevent the absorption of many medications. Consult your healthcare provider if you take a magnesium supplement. Anyone with renal failure should avoid magnesium supplementation.

source :-

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Thank you very much for all your help will really look into it spoke to pharmacist who said my blood thinner was fine to take with supplements as long as I leave 2 hours in between


I can only add my support to the recommendation for magnesium. When you consider its incredibly vital in maintaining sinus rhythm it makes sense that those of us with the joy of AF would consider supplementing with magnesium. I use magnesium citrate (800mg per day) and magnesium oil as a spray often.

I had depression which had been present with me for decades, an intermittent but annoying swallowing problem being caused by my esophagus spasming out of sync and hindering food being swallowed and of course AF - which I would visit A&E for at least once every 2 months.

I started supplementing in January specifically to assist my AF -I have had one attack since January which I managed at home.

But an unexpected benefit was my depression has all but disappeared after 30 years of suffering from it - medications left me either numb or exhausted so to find a natural substitute that works has been a god send.

And I have not had a problem with swallowing since February - I would usually get food lodged at least once a week so that was also an unexpected outcome :) I actually only realised it about a month ago and after some investigation because magnesium relaxes muscles its also helped to stop the spasms!

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Thank you for reply spoke to pharmacist who said it was safe to take with blood thinner just nervous as don't want an upset stomach as it my not be effect which is so important to me as the risk of another stroke. I also take 5 mg of bisprosol . Where do you get your magnesium from and what type is it.


Magnesium and how the level in your body is measured is tricky.

My cardiologist put me on Flecainide and dismissed checking Mg levels. My Naturopath did a 'Red cell' Mg blood test and put me on Nutri Ultra Muscleze (Mg+ other) - retested 9 months later and found I was DOWN 10%.

Told my cardiologist last week and he didn't know what a red cell test was (and was sceptical of its efficacy) but said if I insisted I could have a Mg plasma test, which is the norm in the NHS but different to red cell, although both are done from a blood sample.

Lastly,I have read here or elsewhere that Mg will be highest in the blood anyway, as the body robs it from elsewhere when overall levels are low.

Any further information gratefully received from others!!


My doctor took a blood sample to send of to labs for results, my level of Magnesium is normal, so I don't need extra.....


Blood serum tests mean nothing. Magnesium is primarily held in bone, tissue and teeth and released as required. It prioritises magnesium to the bloodstream which means that tests can be way off and your stores of magnesium could be critically low.

Reports sow that 90% of AFibbers are deficient in magnesium to some degree.

Makes sense considering magnesium is the mineral most responsible for keeping us in sinus rhythm.

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Hi Robert.

I am glad that you will be adding magnesium to your daily routine.

Mg is essential for your cardiovascular function.

The best form of magnesium to take is 200mg of Magnesium Glycinate.

This is easily absorbed in the gut .If you can,take it about 1 hr. before bedtime.

It will also relaxes you and help with restful sleep.

Take care and best of health.



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