Q: Can taking lots of vitamins/other supplements cause palpitations?
A: It certainly is possible for supplements to cause palpitations. Some supplements are made from plants that contain ingredients that stimulate the heart. A good source for learning about side effects of common herbs found in supplements is http://nccam.nih.gov/health/herbsataglance.htm. Excess vitamin intake can also cause problems. To learn more about vitamins click here.