I think I've seen the same thing in the patient info, but if I'm not mistaken I've also seen it for meds like Differin. Lots of times they are using doses that are a lot higher than what you would take, in a small animal. If you are worried you can ask your pharmacist or doctor.
In a normal, healthy young person the chances of hyperkalemia are very low. But I do have my potassium checked every six months. Risk factors would be kidney problems and taking NSAIDs on a very regular (like almost daily) basis.