I was wondering if anyone knows if adding alfalfa sprouts for a raw vegie would be o.k., also what about horseradish?

Horse radish is a condiment, not sure of fat content or type, check.
And use accordingly.
.
Alfalfa Sprouts should be a favorable carb, and it would take a huge amount to equal 1 block, so feel free to use liberally. (we use various sprouts with salads)
.
Looling up . . . . .

Alfalfa:
It takes 16 cups! to equal 1 block of net carbs and 1 block of fat.
Since there is more Protein than Carbs and Fiber,
Some Protein is probably available; however, I'd consider it negligible!
.
Horseradish:
1 TBL of (Plain, prepared) Horseradish:
F = 0 Blocks
C = .2 Blocks
P = 0 Blocks

Thanks John! I wanted to make a sprout sandwhich with my new zone 123 bagels. Toasted with a little cream cheese, avacado slices and sprouts, they're delish!