I have since had two other B12 levels drawn, 6 months ago and last week
These patients are often recommended to receive 1 mg of oral vitamin B12 daily indefinitely, but intramuscular injections may be necessary if oral supplementation is insufficient Mahawar2018Langan2017
Using syringes with user-friendly design features, such as the tactile and OSHA-compliant RELI Safety Hypodermic Needle , makes for a more pleasurable outcome for both patients and providers
Comparison of sublingual and intramuscular administration of vitamin B12 for the treatment of vitamin B12 deficiency in children
Who should avoid it, warning signs to watch for, and what to know before combining it with other compounds
But for most purposes (like weekly maintenance injections), IM is the preferred route at home because its simpler (the vitamins absorb quickly from muscle into the bloodstream over a few hours)