Hello, the reactions you mentioned had to do with intravenous administration of potassium and are not expected with oral administration of the drug. Potassium is a well known irritant of the veins particularly when administered rapidly and in higher than usual concentrations. Oral potassium sometimes sometimes causes diarrhea or loose stools. For the vein irritation you can use a non-steroidal anti-inflammatory drug unless contraindicated for medical reasons. If the irritation is minimal, just wait and it will go away very soon. I hope I ve helped! If you d like more information about this subject, please let me know. I ll be glad to help more. Kind Regards!