Can I drink orange juice after my Juvederm injections? Can I purchase the product on my own?

You can drink orange juice or anything else you would like after filler injections. It is best not to purse your lips, as when using a straw, particularly if your lip correction had to do with lines around the mouth.  It is also best to refrain from alcohol as it can make you bleed a little bit more and therefore bruise more.  This really applies for the week prior to injection. 
An individual patient does not have a way of legitimately purchasing their own injectables. These are considered medical devices with clearance by the FDA and are only sold to licensed physicians. The seriousness  surrounding who can purchase injectables and who can perform injectable treatments should signal to you the seriousness that things can potentially go very wrong when an unqualified person does these injections, or in general, that these procedures have the potential for serious side effects. 

Yes, you can drink orange juice, but I recommend avoiding the use of a straw for 1-2 days after lip fillers. Allergen only sells Juvederm to medical practitioners. Hope this helps.

Yes you can drink orange juice after your injections, there should be no interaction with the product.  If you are getting Juvederm in your lips, it would be best to avoid using a straw for 7-10 days.  You cannot buy the Juvederm yourself, it is only available to properly licensed medical professionals and even if you could buy it, you would still need an expert injector to properly insert the product into the desired location.  Best of luck!