I thought rather than attaching my signature line to a post I would just put it here. It’s rather long…

Undiagnosed hyperthyroidism caused my first episode of afib in 2003. Took metoprolol and methimazole in declining doses until 2005. Three episodes of afib - and 3 trips to the ER - in Jan. and Feb. 2013, led to an afib ablation on Feb. 28, 2013. Stopped Xeralto at two months post ablation. Tapered, then stopped Diltiazem and Sotalol in July 2013. Four episodes in July and August 2017. Taking Sotalol and Eliquis. Hyperthyroidism again seems to be the cause of these episodes. Back on methimazole. July 2018 finally successfully stopped Sotolol. Tapered off methimazole by December 2021. Many, many episodes in October 2022, a few weeks after recovering from mild COVID. More episodes November 2022-March 2023. Thyroid labs abnormal again. On Eliquis, Diltiazem, metoprolol and methimazole. Stopped diltiazem in March 2023. Afib and atrial tachycardia part way through radiation treatments for breast cancer in September 2023. Now taking flecainide along with metoprolol, methimazole and Eliquis. Letrozole started in October 2023 to prevent a reoccurrence of hormone fed breast cancer. February 2025 stopped daily flecainide, use as needed. Stopped methimazole March 2025, thyroid labs have been normal for a while.

Hi Pamela Jean

Simply put your medical history is incredibly complex.I don’t know where u live but if I had your history which I couldn’t because I am a male although males rarely can have breast cancer, I would seek a second opinion at a major well known university med center..
Here is my simple take. Because I believe , now more than ever , as a physician that magnesium supplementation with my protocol converted my AF to SR now for 18 months , I would make sure I was on a good scientific based magnesium program, because the evidence for Mg deficiency with AF is so strong. The thryroid issue for sure can trigger AF but still I would not ignore the liklihood of Mg deficiency playing a role. i
Hugging

I do take a magnesium supplement for constipation. No idea if it’s medical grade. It is:

Life Extension Magnesium Caps, 500 mg, magnesium oxide, citrate, succinate, heart health, healthy bones, metabolism support, 100 vegetarian capsules. I usually take two a day but just now I see the serving size is one a day. I buy it on Amazon and used to buy a different formula but it wasn’t available the last time I ordered so they recommended this one. The other was twice a day. One capsule is 119% daily value.

I now need to edit my history. I’m in afib again this morning so I’ll be taking flecainide twice daily again.



Edited 1 time(s). Last edit at 03/10/2025 12:04PM by PamelaJean.

All the data I read in the medical literature indicatesl Mg oxides l is possibly the worse Mg supplement because of its low absorption. Yes cheap but basically a good laxative like Mg hydroxide and Mg sulfate .
Hugging

Same here, and the citrate formulation is the most easily absorbed.