when you first go to minoxidil.com, right at the top of the page in blue letters there is a link for the 15% xandrox.
scroll down the page to where it says "to place orders click here" and go with the online order form. There is a long list of products, the 15% xandrox is on there, its better than the 12.5 as its a liquid instead of a cream. There are 2 options for spiro, a cream and a dabber, I find teh cream smells better