I drank a 10oz. bottle of Mg Citrate, that according to the bottle, contained 290mg of Mg per 1 oz, and 80mg potassium per 1 oz. I drank it about 10:45pm. I probably didn't need the whole bottle as I continued to have a bit of diarrhea until Sunday afternoon(I flushed Friday night), despite taking calcium supplements to 'curb the flow'. But it did prevent the need for a Sunday enema, so I can't complain too much.