I bit my lip & now i have a blister what can i do to get rid of it in a few hours?

Not Much: Like swelling anywhere in the body--especially in soft tissues like lips--time is the only proven way to reduce the swelling. Cold packs can help if they're applied immediately. The bigger problem is avoiding additional trauma: once your lip is swollen, you are much more likely to bite it again, which will prevent quick healing. There's really no medicine you can rub onto your lip to speed it up.

Time: Is what you need and you need more like 7-10 days. You cannot rush or fool mother nature. Treat the symptoms and stay comfortable.