That is a question for your doctor. They can run a lab tests (draw blood). The tests you would want in this case are Vitiman Panel and Nutrition Panel. Each person is different, so its the tests that speak. They can tell you if you are in normal range. When I did a vitimin panel a few years back, I was really low on my b-12 in fact I was so low I had to get a shot of it every 2 weeks. Finally worked up to once a month. Just recently got off the shots.
DX: Wegener's Disease, Migraines, Diabetese Type II, PCOS, Lactose Intolerant, Benign Heart Murmer, Depression, Asthma, Asperger's Syndrome, Necrotizing Gramultous Inflamation in eye, A.D.D., Acid Reflux
Medications: Prednisone, Tri Nessa, Percocet, Metformin, Prilosec, Protonix, Zantac, Advair, Cingulair, Albuterol, Calcium + Vitamin D