b12 injection needle and syringe The Advantages of Injections Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine B12 Shots for Weight Loss:

Pros of B12 Oral Sprays: Up to 90% absorption rate (comparable to injections) Completely painless and non-invasive No needles, no medical appointments Convenient daily use at home Travel-friendly and portable More affordable long-term Can use methylcobalamin (superior bioavailability) Pleasant taste (raspberry flavor) No risk of infection Cons of B12 Oral Sprays: Requires daily consistency Must hold under tongue for 30-60 seconds May not be suitable for extremely severe deficiency requiring immediate correction Absorption Comparison One of the biggest myths about B12 supplementation is that injections are the only way to achieve high absorption

One user noticed the shift immediately: "My dr tests mine every 3 months now, instead of 6 months." - [deleted] For some, testing is linked directly with treatment plans: "I need to have 6 jabs over 2 weeks and Ive had 3 so far." - No-Hass-401 And in more complicated cases, doctors look for underlying causes, including autoimmune issues: "If worried, ask for the intrinsic factor in a blood test - that will tell you if you need injections." - Difficult-Stick-2040 These tests are typically straightforward, inexpensive, and highly informative - making them an essential part of staying healthy while on Mounjaro

or slow I.V

How we reviewed this article: Current Version October 03, 2025 Written By John DiBella Fact-checked By Dr