A B12 injection is a highly effective way to get this vitamin right where it needs to go, bypassing the digestive system for maximum absorption
A 2020 study found that those with vitamin B12 deficiency may present with cognitive disorder, though the deficiency was not shown to be a direct risk factor for cognitive decline ( However, results have been mixed and treatment with vitamin B12 wasnt effective at improving brain function in people with normal brain function ( Depression Its been suggested that there may be a link between low vitamin B12 levels and depression
Thyroid disease, medication effects and sleep apnoea do not respond to lipotropics
So, we recommend using SL vitamin B12 rather than oral and IM, especially in patients who do not tolerate IM injection and patients who need prolonged vitamin B12 supplementation, such as patients with long-term metformin use and patients with pernicious anemia or with gastro-duodenal resection [51,52,53,54]
Safety & Caution B12 is generally well tolerated, but context still matters
& Liu, D