Just wanted to share an experience I had. I have been getting heart palpitations as of late. My heart flutters in my chest. A very uncomfortable feeling. And worrisome. I thought it was low b12, but recently read that potassium helps to regulate our heart. I have a mitral valve prolapse as well. I keep waking up from naps with my heart racing and my hands shaking. Yesterday, I took a potassium supplement when my heart started palpitating. It stopped. Probably shouldn't work that fast, but later I took a nap and for the first time I didn't wake up shaking with my heart racing. One word of caution is it upset my kidneys a little because I have scarred kidneys. My theory is that our minerals are leaking out because our gut isnt working properly. Maybe it's just me with intestinal problems and not lupus at all. Just wanted to share. I am not on any medicine, and trying to figure things out naturally. Hope everyone is feeling well.