Yes you can, it is good for you. I use patanjali aloe vera juice, it is quite good.
wash aloe vera leaf. pat dry with a cloth. slit one of the edges with a scissor and open up the outer layer. Scoop off the gel, discard any greenish gel. Store it in a dry jar and refrigerate for further use. ( read the complete post for details) Add 2 tsp gel to any fruit juice and blend. Serve immediately.