Using Nizoral shampoo to treat hair loss

[hairforme]

I'm 19 and have a conspicuous receding hairline.
I recently started using Nizoral shampoo as I've heard that this product helps a lot. I use the over the counter 1% formula.

I understand that this shampoo should be cycled, as in once every 2-4 days rather than everyday. Why is that? Also would it be a good idea for my to upgrade to the 2% formula. I guess I would have to beg my doctor for a prescription.