Our B-Complex injections are loaded with high amounts of vitamins B1, B2, B3, B5, B6 and B12. Since these are important vitamins, it is common to receive many benefits from our B-Complex injections. This formula assists in the metabolism of sugars and starches and digestion, increases serotonin levels in the brain, strengthens the immune system, supports the nervous system and can play a vital role in increasing energy and stamina. Other benefits include an increase in mood stability as serotonin levels improve. We recommend weekly B-Complex injections if possible for those that want consistent benefits.