Klor-Con Availability?

Hi guys, I have been trying to get Klor-Con for my low potassium and just cannot find it ANYWHERE. The big pharmacies don't carry it, I've tried Costco, Sam's Club, Walmart, Publix, Walgreens, CVS, and had no luck. I've tried Amazon Pharmacy and had great luck with that, but they just told me this morning they are no longer carrying Klor-Con. I am overwhelmed and at a loss of what to do. Calling insurance wasn't much of a help, since they use Amazon for home delivery, and their other pharmacy options. Do you guys use an online pharmacy for getting Klor-Con? I can't use generic, it makes me sick. :(