We've been seeing more stories recently of people being hospitalised after taking nangs so what's happening? A big reason is we're seeing more of these large canisters being sold, which can Vitamin B12 shots, microneedling, ear candling do any of these at home medical treatments work? Vitamin B12 Injections for Aging and Longevity InVita Wellness B12 injection side effects : r B12_Deficiency What are the possible side effects of a vitamin B12 (cobalamin) injection?