1st to market is extremely importantThose saying the contrary are the one that do not know much about pharma, and about marketing in general. When you are first to market you secure your way to customers who will reluctantly change something working for something they're not sure of. Plus when you are first to market you do not have to fight to dislodge competing products. I would go as far as saying that a slightly less performing product, would do better if it is first to access market, securing doctor training, awareness and patient habit would make difficult for a similar product to compete once those are established, unless the product 2nd to finish line is in a new stellar league compared to the first one, otherwise, similar product 1st coming is winning, basic marketing101