Possible for lightheadedness to go away 1 day after 1/2 tablet of 0.1 mg florinef (fludrocortisone)? i do. salt &gatorade wasn't enough. lightheadedness now gone.

Possible: If the problem is low blood pressure and you are taking increased salt still it is possible, although this is a low dose. Florinef (fludrocortisone) has a "functional 1/2 life of up to 36 hours, at one day a lot of the medicine is still functioning". By 7.5 days the medicine is completely gone, but the effect will wear off sooner!!! It should be taken as directed.