I have looked up all the ingredients in the current recipe and using V8 and Mrs Dash. The main part of Mrs Dash is the pepper, lemon, and onion, but I show all ingredients. Of course its salt less itself.

Tomato Juice from Concentrate (Water, Tomato Paste),
Carrots
Celery,
Beets
Parsley
Lettuce
Watercress
Spinach
Lemon Juice
Salt
Natural Flavoring
Vitamin C (Ascorbic Acid)
Citric Acid.
ground cloves
cinnamon
vinegar
Onion
black pepper
celery seed
basil
bay
marjoram
oregano
thyme
cayenne pepper
coriander
cumin
mustard
rosemary
garlic
carrot
orange peel
lemon juice powder
citric acid
oil of lemon