Question to Doctors: Do any of you agree with the claims of an over-the-counter drink mix called Super Beets or other beet mix drink that will restore energy or not?

No doctors here. Some medical professionals, and plenty of knowledgeable people. Really not a question for most MDs anyway - why would they track brands of food?
Drink mixes are NOT worth a dime, in my humble opinion. NOT ONE food supplement is magic. Your entire diet has to be healthy.
Do you drive a car year after year without changing the oil, and then buy an 'oil additive' to try to make up for it?

Buy a blender and your own veggies and fruits and make your own.

First it was "super kale", now beets. And after all the fools have spent their money it will be " super----(fill in the blank).