I have a question about potium suppliments...?

I recently started taking them on my own for more energy. I've felt more energetic along with paleness in my face and anxiety attacks. Could that be a cause of the supplements... Also the pills call for three a day and im only taking two. I know if there is too much potium in ur body, your kidneys filters it out, but if I have kidney stones does it make it harder to filter out? I just don't want to hurt myself for some extra energy, I sort of diagnosed myself with Adrenal fatigue syndrome...