You will have to be careful with V8 drinks
"If you are a diabetic or are pre-diabetic with fluctuating blood glucose levels, you need to take into consideration that V8 contains added sugar. Regular V8 only has around 8 g of sugar per 8 oz serving; however, the berry blend has 18 g. While it may not be a lot of added sugar per serving, if you drink multiple servings throughout the day, blood glucose levels could rise or fluctuate, making diabetes more challenging to keep under control."
It is better to make up your own juices, as you can make a better judgement what goes in the mix.
There is all types of tomato juice out there ,best read the small print.
Check this veg out as it should be a great additive to your mix.
Bitter gourd and its benefits | Nutrihealth.in