Hello. To treat low Vitamin B12 levels, the right treatment depends on the severity and cause of your deficiency. For mild cases, daily oral supplements of Methylcobalamin or Cyanocobalamin (usually 1,000 to 2,000 mcg) are highly effective. However, if your deficiency is severe or caused by absorption issues (like pernicious anemia or gut disorders), intramuscular B12 injections are preferred because they bypass the digestive system. I highly recommend consulting your doctor to determine the exact cause, obtain the correct prescription dosage, and monitor your progress safely.