I agree with Ethan about the banner. It is to big. You need attention on the contents more down on the page.
I will take away the categories in the middle coloum, you have the list on the left. Rather put featured items there. You probably also need your logo somewhere at the top.
The daily supplements section: rather make it fading in and out than the shuffle. The shuffle moves over the content in the middle coloum.
On your new products page. The buy now buttons are broken. Maybe make them smaller or if you can move them to the right of the description.
And remove the counter
In other aspects, looks great.