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The body tightly regulates B12 absorption through intrinsic factor, a protein produced in the stomach that binds to B12 and facilitates its uptake in the terminal ileum
Products are not evaluated by the FDA or any regulatory authority for human use
B12 Patches and Nasal Sprays Timeline B12 patches and nasal sprays serve as alternative systems that demonstrate possible advantages after repeated applications
| 04.21.26 | 11 min read
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