Juicing veg is great for a bunch of reasons BUT you do lose the fiber content.
When i had severe colitis it was my go-to to make sure i was getting high quality micronutrients.
But way better to make a salad!
If you are looking to replace a meal, maybe add some melted coconut oil to it. Fat often helps w nutrient transport.
Also, try to drink it as soon as it is juiced or store briefly in a container where there is little air space. Once nutrients are exposed to air they begin losing their nutritional content.