b12 vitamins vs b12 injections Are Shots Safe? Royal Palm Beach Medical Group B12 Injections vs Oral Supplements:

One possible explanation is that low serum vitamin B12 levels would trap folate as 5-methyltetrahydrofolate, prevent the generation of methionine from homocysteine, and therefore reduce protein synthesis and lean tissue deposition

The researchers reported that lowering NNMT expression changed metabolic pathway activity and energy use

The following oral and sublingual B supplements are some examples of NSF-certified for safety and label accuracy: Oral Capsules: Naturewise Vitamin B12 1000mcg Softgels Garden of Life Vitamin Code Raw B Capsules Thorne Vitamin B capsules Sublingual: Pure TheraPro BioActive Vegan Methyl B Sublingual Liquid Perque Activated B12 Guard Solgar Methylcobalamin Sublingual Final Thoughts on Vitamin B Supplementation Whether you choose oral capsules or sublingual tablets, daily high-dose B supplementation can effectively restore levels in most people who are deficient, sometimes even with compromised B absorption

An IM injection delivers medicine directly into a muscle rather than under the skin, allowing faster absorption and avoiding some of the delays or limits of oral or subcutaneous routes