how many milligrams in a b12 injection For an adult with documented vitamin deficiency requiring weekly intramuscular injection, milliliters should be drawn from a vial that contains 1000 µg (1 mg) per mL? Vitamin B12 Injections: Ideal Dosage

[PubMed Citation] HSDB

PMID 6387014

Adults usually getvitamin B12 injections in doses of 1000 mcg, based on the deficiency level

When to See an Eye Specialist Dont wait if: Your eye has been twitching for more than 23 weeks and home remedies havent helped The twitching is getting more frequent or intense over time Both eyelids are twitching at the same time The twitching is strong enough to close your eye Twitching has spread to your cheek or mouth You have any vision changes , drooping eyelid, or facial weakness alongside the twitching A childs eye has been twitching persistently (needs urgent evaluation for tics or refractive errors) Youre elderly and have new-onset persistent twitching You have a history of neurological conditions This article is for general informational purposes only