Hi, I have Fibro. right now I'm in a paine cycle, I hurt so bad I can't think. I just moved so I have a new Dr. She won't give me any paine meds. without me first seeing a paine Dr.. My last Paine Dr. gave me morphine. Its all in my records. I didn't like the morphine, but I would like something. I'd like to slap this little........... Anyway I got sidetracked. I got myself some potassium tablets. I thought it was a good thing for Fibro. My old DR. ,out of the blue, did a blood panel. It said I had to much potassium. She said it could effect my heart, I was so embarrassed. I would ask your Dr. first.