The problem with Nizoral is that the company has been unreliable as of late. I have switched to Regenepure and it seems ok. I don't think this stuff adds much more to the Rogaine / Propecia regimen, but I will say that the Regenepure ingredients have just about everything that MIGHT have an additional small positive effect on hair growth.
Therefore, if you want to throw absolutely everything that is reasonably available out there at your hair loss, I would say Regenepure is a little better than Nizoral. More expensive, but at least you can always get in online unlike Nizoral, which goes in and out of production unpredictably.