Xanthia
I remember
Pita saying that too much potassium at one intake can cause heart attack (This information was coming from her brother, who's also a doc if I remember correctly?). Since this day, and because I'm always taking my morning pills with a big coffee, I'm slicing mine in half, and I take one half, and the other 30 minutes/1 hour later. I'm not sure if this information was real or not, but I prefer to do it this way just in case.
The pharmacist I went to see to have some conselling on equivalent of IP vitamins but less pricy said something like that to me, that the potassium we're taking is too much (at least for my young age, I'm 21).
So maybe it's ok if you're taking a smaller amount.