What if we told you one serving of Ontario asparagus has only 20 calories (per 1 2 cup) but still brings major nutritional value including: Folate Vitamins A + K Infusions: Glutathione Rapid Wellness: Your provider of Great Health All hail asparagus! Had some lately? If not, say I do to asparagus. It's an excellent source of glutathione, folate, the amino acid asparagine, and fiber. Found these beauties amidst a slew Rich Food Glutathione Stock Photos Free & Royalty Free Stock Photos from Dreamstime Bunch of fresh green asparagus spears rich in vitamin, glutathione, minerals, on old rustic wooden background Stock Photo Alamy Glutathione, what is it? Do I need it? Johnson Chiropractic, Inc.