I've been on bp meds for a couple years now, so potassium loss is an issue for me. When I fall below about 1000mg of potassium intake a day I get leg cramps, especially at night.

I try to have potassium rich foods throughout the day, rather than take supplements, and it seems to help. If you are on OWL a small glass of V-8 juice has over 400mg. A can of tuna has over 600mg. Four oz. of good steak has over 450mg. A good-sized artichoke has over 500mg. Over the course of a day that can all add up!

I track my intake on FitDay as one of my custom goals. If I don't have at least 1000mg in a day, I'll try taking a supplement at night.