I use grapefruit seed extract (GSE) at home for various things, so I've got it on hand. I've read it can be used as a very effective water treatment against pretty much everything on the trail and is possibly safer for consumption than iodine. However, it doesn't seem to be widely used for that purpose, so I have to wonder why? Has anyone actually used it on a trip? Did you get sick at all, or did it work for you?

The water around here is mostly muddy and warm, so my tentative plan is to filter it through a coffee filter first to get it clearer, and then add GSE and wait 30 minutes before consumption.
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The journey is more important than the destination.