Can pvcs come and go?would taking a multivitamin daily containing magnesium and potassium help?ive been assured they are benign by doctor

Yes, ok: PVCs can come and go. Supplements may not help, but may and should not hurt to do so.

Yes: Watch your diet also, specifically coffee, tea, alcohol or energy drinks may cause PVC's. PVC' s are benign and the vitamin might not help, but it is OK to try.

Yes: PVCs do often "come and go". The extra potassium and magnesium may help, just watch out for diarrhea if you supplement too much magnesium. And in general PVCs are felt to be benign. Up to 80% of the healthy population has PVCs!

Yes: Yes, PVCs may come and go, often unexpectedly. If isolated and not associated with symptoms, there are usually benign. They may also indicate some underlying disorder including magnesium or potassium problems as you note. A multivitamin may be overall beneficial for your health, however specific supplementation would require a blood test to determine what your actual levels are.

Yes: You have been checked by a doctor and serious underlying disease has been excluded. Which is very good news. Vegetable, nuts, salads and fruit have a lot of helpful electrolytes such as mag, phosphate and potassium. Usually no need to take extra vitamin pills. By the way, dried apricots have the highest amount of potassium of any food. And nobody has ever died from dried apricots. Nuts have mag.