I saw my cardiologist this week for skipped beats. He put me on a 24 hour holtor monitor, which of course during that time period all was quite eventful. I will get the results next week. He did prescribe magnesium which I will start today. He did not want me to start the magnesium during the 24 hour period. Hopefully, that is an indication that they work quickly:) Does anyone here take magnesium for skipped beats and esophagal spasms? If so, do they help and how long does it take to feel the benefits if any?