Wrights Sprouts Alfalfa sprouts are nutritious sprouts with a surprisingly potent source of dietary protein. Each serving of alfalfa sprout contains a full three grams of protein, making it one of the world's most reliable raw, vegan sources of this critical macronutrient. Alfalfa sprouts are regarded as a good source of folate, pantothenic acid, vitamin B6, niacin and thiamin.