Stopping hair loss quickly

I am trying to look into my various options for treatments for hair loss. I really want to stop my hair loss quickly if that is at all possible. My hair is starting to get thin, and I don’t want to end up with bald spots. Can anyone tell me what is the best product to use?

I saw one ad for a product that claims to stop hair loss in men in 7 days, is this really possible? Does this product work? I really want to find out more about my options, so I would appreciate any information on websites where I could do that.