Oral potassium is dramatically less toxic than IV potassium, because the body has to actively transport the ions and it's not terribly interested in killing its

Oral potassium is dramatically less toxic than IV potassium, because the body has to actively transport the ions and it's not terribly interested in killing itself. It could still be dangerous in very high doses, but that's unlikely to happen by accident. However, oral potassium does have other effects. The proton pump in the stomach works by exchanging K+ for H+. Excess potassium may affect its functioning. There are several reports of nausea and pain with potassium supplements [1], although I've been adding KCl/NaCl "lite salt" to my work lunches for a long time with no problems. 1: https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/485434 https://jamanetwork.com/journals/jamainternalmedicine/fullar...