I made my 1st med error today. I've been working at a rehab facility for 2 months now (new nurse). I gave a resident 30ml Kayexalate by mistake instead of Kaopectate. I went home and something made me remember it so I called work. The on call ordered a BMP. The man was ok and actually said he's never felt better upon assessment. I just feel awful about it. I know I'll get reprimanded at work and I know I deserve it. I'm always really careful but I screwed this up. Sorry just needed to vent about it.