I have found myself pondering this question a lot this year. I have been an avid non supplement girl for years believing I can eat all I need. Earlier this year we got the news that my other half is to get ready for kidney dyalisis. This had meant many changes especially on the food front. One of the minerals we have to cut down drastically was potassium. As we runner know this is vital for our running and some would say they are certain minerals that we use in abundance from the longer runs. This had lead me to make the decision to find a good multi vitamin and mineral to compensate for leeching out the potassium in our main meals. I add in a banana here and there as well, but while looking around the subject I realise that there are many of these supplement recommended for runners and wondered if anyone here has their favourites.?