How can I get it faster delivery?

At this moment, this is impossible.

Are you shipping to usa?

Hello. Yes, we make delivery in the USA Have a nice day

The back of the bottle shows an expiration date of 2016. Is this so? If not, what is the expiration date?

Usually these bottles come from a middle-European country so you'd likely have the date in that language. Typically (and because of the nature of homeopathics) they don't "expire" like normal stuff. (because a homeopathic is so super dilute naturally and the only ingredients are things like sugar which doesn't have bearing on how the homeopathic remedy works (only on how sweet/palatable it is.