Do canned beets have nitric oxide?
Then, do canned beets contain nitrates?
Basically, it sounds like boiling beets can leech them of their nitrates, so canned beets won't have the same content as listed in various published tables. Seems like the surest ways to lock in nitrate content is via the beetroot juice or fresh beets and baking them.
Keeping this in view, can you drink the juice from canned beets?
First it is okay to drink that beet juice. Second you can use the juice to cook a borschtsch, a polish beet root soup. The clear soup is just the beet root juice and you add salt, pepper and a bit of lime juice if the canned beet roots are not amrinated in a vinegar broth in the can. It is to your taste.
Not to mention, they are low in calories and a great source of nutrients, including fiber, folate and vitamin C. Beets also contain nitrates and pigments that may help lower blood pressure and improve athletic performance.