I have taken magnesium taurate for years and it completely eliminates my irregular heartbeat. I also take magnesium Glycinate for my depression and insomnia. I always try to stay at 200mgs or below using supplements. There are so many different kinds of magnesium that you need to find the one you need for your problems. These are just my experiences using magnesium.
I understand the body has to manufacture Chloride in order to use the Magnesium. Taking Mg with the chloride already "combined" does away with that need.
They say Magnesium chloride is the most easily assimilated into the body, even though it doesn't have as much magnesium as other varieties.
If you buy a $20 bottle of Mg chloride from the health food store it will last ages, because the most You can take without getting an upset stomach is a quarter tsp a day. Using the Magnesium bath salts (which is Mg chloride) allows you to make any strength you like, and also be able to massage large amounts it into your body without getting an upset stomach.
I believe this Magnesium Chloride has amazing benefits that people won't believe. If you have ANY of the common old age afflictions, Memory, bones, etc. Try Magnesium Chloride. if your diet isn't supplying enough magnesium (and you don't even know if it isn't, blood tests don't pick it up) you might be amazed. I am not exaggerating.
I was getting atrial fibrillation attacks for 7 or 8 years, mostly in the mornings in winter. I could only sit quietly until it went away, dreadful feeling.
Taking a quarter tsp magnesium chloride everyday cured me very quickly, I don't need to take it any more now that I'm retired and not as active and my reserves are presumably back to normal.
I believe I developed atrial fibrillation because of heavy sweating due to physical outdoor work depleting my reserves of magnesium. All the doctors could prescribe were beta blockers which I soon stopped taking, but it was years before I discovered three people on one website, who had cured themselves of this awful affliction. Very much hope this helps others.