OPTIMAL DOSAGE: Each of our vitamin B12 tablets vitamins contains a NUTRITIONIST-APPROVED dose of 1000g B12 and 400g folic acid, to be taken every second day. Studies show B12 levels are maintained MORE EFFECTIVELY. INCREASED TOLERABILITY: Our small, EASY TO SWALLOW TABLETS of methylcobalamin B12 are SUGAR-FREE and made without any toxic sweeteners, flavorings, or preservatives. Sublingual and oral-spray B12 often contain sugar substitutes that cause GI symptoms. ENHANCED SUPPORT WITH QUATREFOIL: We use Quatrefolic in our B 12 vitamin energy boosters for women and men, a COMPLETE, BIOAVAILABLE FOLATE that works with B12 to support iron functionality and healthy red blood cells. BIOACTIVE B12 FORMS: We use methylcobalamin and adenosylcobalamin in our vitamin B12, the two bioactive forms of B12 that naturally occur in the body and are BETTER RETAINED. PURE VEGAN VITAMIN B12: Our vegan B12 supplement contains purified, BIOAVAILABLE B12. Unlike other inactive B12 forms, our vegan tablets immediately absorb into the bloodstream. B12 deficiency is common due to diet, malabsorption, and low stomach acid.