Is Nizoral better than other shampoos and can it promote hair growth?

Nizoral 1% (Ketoconazole 1%) is sold as an over the counter anti-dandruff shampoo. Nizoral 2% (Ketoconazole 2%) shampoo has twice the strength of the over the counter shampoo. The active ingredient, Ketoconazole is said to act as a DHT blocker. While some people who use Nizoral may believe that it does control hair loss, there is no objective evidence that it is anything more than a good shampoo.