4rx will tell you that they need a prescription but they will send it to you without one. I think they have to say they need a prescription on their website to legally be able to sell it. Someone in the past had these finasteride pills tested and they are 98% finasteride. The same person tested propecia and it was about 93% fin. There is of course a 15% margin of error, but either way the product is legit. I've read some stories where people switch from propecia to generic finasteride and experience side effects, but I think that may be in the head. Some can be such hypochondriacs.
I'm glad propecia has worked for you. How do you think it has done for your hairline and hair density in general? Ultimately I'm hoping for propecia to bring me back to a "NW1" hairline but that might just be impossible.