Forms of Vitamin B12 and Who They Suit B12 Form How Its Taken Best For Tablets/Capsules Swallowed with water Mild deficiency, general wellness, everyday convenience Sublingual tablets Dissolve under the tongue People who may not absorb well through the gut Nasal spray Sprayed into the nostril Those who dislike pills or injections Injections Given in clinic or at home (prescribed) Confirmed deficiency, absorption issues, and faster results Oral tablets and capsules are convenient, but they must pass through the digestive system, which can limit absorption in people with gut issues, low stomach acid, or certain surgeries
The foremost being that there is limited published research examining their combined effects
The Role of Toll-like Receptor 2 (TLR2) in the development and progression of Hashimotos Disease (HD): a case study on female patients in Poland
Several market and distribution factors influence the final selling price
Levy EJ, Anderson ME, Meister A
They aren't redundant