I drink a 16oz. veggie/fruit drink from nekter daily. it contains a lot of kale, broccoli, celery, etc. can you overdose off of vitamins from veggies?

NO: The only vitamins one can overdose from are Vitamins A, D and E. One has to take tremendous quantities of these to overdose. Fruits and vegetables contain NO Vitamin A (only beta carotene, which we can convert to A but is non-toxic), no D and minimal amounts of Vitamin E. It is impossible to overdose on vitamins from fruits and veggies. In general, the more of these you eat, the better!