Is Organic Lemon Juice Okay?

Hey All!,

I'm just getting ready to start my first MC. I know you are supposed to buy lemons and juice them but I came across organic lemon juice in the health store the other day and thought that maybe it could work. It is 100% pure lemon juice, no additives or anything, it's just been bottled up. Does anyone see anything wrong with using this instead of juicing my own lemons-I mean it's the same stuff right?