b12 injection brand west ward ingredients VITAMIN (Generic) Injectable Solution, 1000-mcg/mL, 250-mL vial - Easy Refills Vitamin B-12 1000 Injection (VetOne),

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When B12 levels become problematic: High-dose supplementation (particularly doses exceeding 1,000 micrograms daily) Frequent B12 injections without medical supervision Underlying conditions affecting B12 metabolism Concurrent use of multiple B12-containing supplements The NHS does not set an upper safe limit for vitamin B12 because harmful effects from excessive intake have not been definitively established

That said, if any adverse effect is suspected to be dose-related, the dose can be reduced

In combination with other vitamins, it helps in strengthening the immune system, improves metabolism of the body, and is important for the nervous system