For broader questions about how safe these medications are in general, the SELECT trial data, and what the 2024 to 2026 evidence shows on the most-discussed concerns, see our separate guide on whether weight-loss injections are safe
The major difference between a B12 shot and an oral supplement is that the B12 shots or injectables are directly put into the bloodstream while the oral ones take time to ingest through the bodys digestive system
Examples include antidepressants, heart medications, birth control pills, HIV medicines, and transplant drugs
The peptide remains available through research chemical suppliers, though the quality, purity, and reliability of these sources varies enormously
Research suggests the use of vitamin B12 supplements in those with kidney disease and a B12 deficiency, but fully understanding the risks and benefits of regular supplemental B12 in those without a deficit still requires more research
The rate of absorption for these injections are believed to be higher than oral supplementation, which is why experts warn against possible side effects