From where to get minoxidil ?

[piratedude]

Hi all,
I am just starting with minoxidil and i bought 3 bottles of liquid from a local supplier but i have thoughts that it is fake. After i apply it in 1 hour or so my hair gets white powdery coating and i have to wash it away.

Can you recommend a trusted site with cheap/free worldwide shipping (i want budget minoxidil, Rogaine is a bit pricey). Maybe you know a legit ebay seller?