what are the best b12 vitamins?
['B NOW Foods B12.', "B Nature's Bounty Super Strength Liquid B12.", 'B Seeking Health Active B12.', 'B Garden of Life Mykind Organics B12 Spray.', 'B Kirkland Signature Quick Dissolve B12.', 'B Vitafusion Energy B12 Gummy Vitamins.', 'B Deva Vegan B12.', 'B MegaFood Vegan B12.']