Pure Vitamin B Complex liquid cyanocobalamin is a vitamin found in foods of animal origin such as liver, fish, and eggs, a deficiency of which can cause pernicious anemia. It contains a cyanide group bonded to the central cobalt atom of a cobalamin molecule.

Research shows that certain B vitamins may help to alleviate stress. For instance, a 2019 study published in Nutrients determined that vitamin B supplementation can benefit mood, though more research on the dietary patterns and micronutrient statuses of broader populations is still needed to make an evidence-based recommendation

Vitamin B supplementations may also help prevent migraines in some people. A 2015 report looked at the effects of vitamin B supplementation on individuals with migraines. The authors determined that reducing homocysteine levels with folic acid (the synthetic form of folate) and vitamins B6 and B12 may help reduce symptoms associated with migraine with aura, which is a recurring headache with sensory disturbances.

B vitamins such as thiamine (B1), pyridoxine (B6) and cyanocobalamin (B12) have antinociceptive effects in experimental animals with acute and chronic pain linked with neuronal injury . Vitamins B6 and B12 have been shown to counteract the deleterious effects of ischemia on neurons . These vitamins play important roles in nutrition, nerve conduction, axonal transport, synthesis of neurotransmitters and excitation via cyclic guanosine monophosphate (c-GMP) signaling pathway. Therefore, reconstructive activity of vitamin B complex on degenerative nerves may facilitate the recovery of nerve function after peripheral nerve injury. Resolution of peripheral nerve injury may benefit from a multinutrient treatment approach since vitamin B complex are necessary for optimum functioning of the nervous system . Unavailability of these vitamins may decrease the enzymatic activity of some enzymes and result in neurotoxicity.