Potassium citrate and potassium gluconate are both viable supplements for getting your potassium in (we can't digest "just potassium"). The OP posted a supplement that is potassium gluconate, while the Ideal Protein supplement is Potassium citrate. The dosing looks very similar for both, though if you want a 1:1 match you should look for a potassium supplement that uses potassium citrate.