peas, beans and lentils), and citrus fruit (see HealthLink BCs page on Getting Enough Folic Acid (Folate) for dietary information)
+ Are there any side effects of B12
Injectable administration ensures rapid systemic absorption , particularly valuable for patients with malabsorption syndromes, gastrointestinal disorders, or those requiring higher therapeutic doses
While many feel energized after a B12 shot, scientific evidence shows that the biggest benefit occurs primarily in individuals with a deficiency (SELF)
Additionally, a randomized, double-blind, placebo-controlled trial in 2,588 healthy older adults with mild hyperhomocysteinemia found that daily supplementation with 500 g of vitamin B 12 and 400 g of folic acid for two years reduced blood homocysteine concentrations but had no benefit on depressive symptoms in those with or without depressive symptoms at baseline (110)
* Nausea * Vomiting * Diarrhea **Rare Side Effects (may affect up to 1 in 1,000 people):** * Severe allergic reactions (anaphylaxis): Difficulty breathing, swelling of the face, lips, tongue, or throat, rapid heartbeat, dizziness
