Is V8 Vfusion okay for babies?

V8 Vfusion claims to provide a full serving of both fruits and vegetables per 8 oz. gl. I feed and my 6 month old is still on cereal, and I don't want her to be so used to my milk that she doesn't want anything else. Her doctor (Eglin AFB) told me that it's okay to start juice now, in moderation. She doesn't take to apple juice very well, even when I mix it with water. However, when I let her taste a little VFusion, she drank it without a problem. Is this okay for her to drink, maybe mixed with water, I don't know why she won't take apple juice, maybe it's a little too tart. Serious suggestions/advice please...experts (doctors, nurses, nutritionists encouraged to answer). Thanks!!