Belle, another idea would be to get a hold of the book "The mother's guide to making more milk" by Diana West and Lisa Marasco. This is a fantastic book with lots of information.

As Nickle has said, medication can be helpful for mum's in some situations - such as previous breast surgery or insufficient breast tissue. Mostly however mums are capable of making enough milk without drugs so trust in your own body hun. Believing you can do it is the first step