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Advertisement - Continue Reading Below Pros Multiple third-party certifications including certified vegan Can be taken with or without food Features an organic produce blend Cons Pricier than others on our list Garden of Life's Vitamin Code line features B12 in its natural methylcobalamin form, which the body may retain better and longer than synthetic cyanocobalamin

[Google Scholar] 64.Pickart L., Margolina A

Symptoms of B12 deficiency may include: Depression Fatigue Trouble concentrating Confusion Memory problems Headaches Mood changes Vitamin B12 is essential for red blood cell production, so long-term deficiency can lead to anemia, which can cause fatigue, shortness of breath, and an irregular heartbeat

published evidence relating to combined administration is particularly limited

Safe for long-term use