I take Heart Calm by Vital Biologics … 3 diff magnesium’s / w Q-10 and potassium in it .
Here is link http://www.vitalbiologics.com
That’s the only product they make .
Made in USA 🇺🇸, 90 capsules $30 free shipping.
It’s been my life saver last 8 years, when my PVC’s and PAC’s kick up .
I usually take 2 when they start ( can take up to 3 ). Saved me a lot of trips to ER .
I have horrible gastrointestinal issues and it doesn’t bother them .
You can Google it too .
Best wishes .