I have been having what doctors call palpitations every day

@713j If your kidneys are working well, no physician has ever said you have kidneys that need watching, then they should dump excesses of pretty much any element. So, 400 mg of magnesium should not be a problem, and yes, every day if that works for you. But, you can have hypermagnesemia, meaning too much, and that's why it's important to ensure your kidneys are working properly....first.

@713j
Yes everyday. That what was recommended to me by my EP. I take the citrate as does not bother me digestively.

@gloaming @I enjoy your feedback as thought goes into your response .
Is there any one brand of magnesium, though your fact finding , that is better than any other brands of magnesium? Because some are costly. Or just pick one of the shelf?

@713j
Not @gloaming so hope you don't mind me passing on what the Director or electrophysiology at Mayo Jacksonville told me.

In his experience and research the Citrate is the most digestible and what he recommends. In his words some experience digestive issues (loose bowels) with citrate but again he said some.

He advised if that occurred he recommended Glycinate as also was highly absorbable. Not my research or opinion but from an EP that has written several books, heavily involved with research, and does seminars around the world. And to add to that he is the President of the Electrophysiology Medical Group Society.

@jc76 I will ask you as I did the other person. Any particular brand of magnesium or just pick one off the shelf?

@jc76 Is there any particular manufacturer of citrate you go to or just pick one off the shelf?

@713j
I think I miss read your prior post and thought you were asking what type on magnesium not manufacturer.

I can tell you from my research that the most thoroughly tested OTC vitamins and supplements is Thorne. But very expensive. They have exceptional quality control.

Life extensions is also a company with a lot of credits are also do a lot of effort for quality control of their products. They too can be expensive.

So who do I use. A company called Puritan Pride.
It has been in business for over 50 years and I have been using since 1990s. They have a good reputation for quality control but offer from time to time specials like buy 1 get 2 free. Thus I wait until those special come around to buy it as my wife takes is also.

I have read that Natures Made is also a good brand and available OTC at at almost any pharmacy or grocery store.

But if price is not an issue I have heard the most positive feedback on quality control on Thorne. I think though it is only mail order. But I think I just saw in on Amazon so you can check.

I got 25% off buying directly from Thorne via mail order as I was a veteran and they offered a veteran discount. The 25% is quite good to lowering their price. I think they also give the same discount for emergency responders, etc.

@jc76 I usually get my magnesium from pure encapsulation because the magnesium is sourced from US.

@713j Whatever is on sale, ideally by a recognized brand, and whose per-tablet dosage is right for your condition. Costco is sure to be good, provided you can purchase there. Walmart will have a decent product, Walgreens, whatever. Ask a pharmacist if he/she knows of a good brand.

I'm in Canada, and we're pretty well regulated here. I can enter any pharmacy and pick a product off the shelf and it will be within a narrow range of '-good, good, good+'.

@lindy9 fortunately I don't really drink alot drinks that contains caffeine, matter fact for about a month or so, I went on another diet where I didn't consume anything liquid but water, but I still have it, I went to the hospital for it and even the Doctors say really there isn't anything wrong, even gave them a urine sample and blood and stood in front of an x-ray, these palpitations happened like maybe 6 months after I lose my job and crashed, I didn't get out much and practically crashed, I'm thinking maybe stress, and anxiety, I don't drink neither do I smoke anything, nor do I vape or anything of these such, thinking back six months ago when I didn’t have this problems, it just makes you reminisce, all the times I complained about work and life not knowing I really wasn’t going through anything.