In a study of patients with chronic low back pain, Vitamin B12 given for 2 weeks reduced pain by 32% compared to placebo [Chiu, 2011] In a 2020 systematic review looking at the use of B12 for nerve-related pain it was found that there is moderate evidence for the therapeutic effect of B12 in the treatment painful peripheral neuropathy [Julian, 2020]
I have been using the Lipotropic and B12 shots for 3 months now and love them
Its abundant in animal-based foods, including beef, salmon, and dairy products
Singly-housing animals, which prevents inter-animal coprophagy, reduces beta diversity of the microbiome compared to stressful (chronic subordinate colony) co-housing conditions 72
Exceptional Cases to Avoid Shots People with kidney problems, iron deficiencies, or known sensitivities/allergies to vitamin B12 should not get B12 injections since side effects could be more likely
Note: some secondary sources cite the 2018 Neelakantan Biochem Pharmacol paper under differing PMIDs (29155147 vs 29355482)