b12 injection vs oral supplement Vitamin Injections vs. Supplements: Which is Better? Vitamin B12 Intramuscular Injections Versus

These include metformin (commonly prescribed for type 2 diabetes), which the MHRA advises may reduce B12 levels with long-term use, and proton pump inhibitors (used for acid reflux)

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It's involved in many body functions, including formation of collagen, absorption of iron, the proper functioning of the immune system, wound healing, and the maintenance of cartilage, bones, and teeth

Peptides act as messengers (signalling molecules) that send signals to cells and tissues of the body to regulate their functions, such as releasing insulin, burning fat, or delaying digestion

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Injections may require clinic visits and cost more, while oral supplements depend on consistent intake and proper gut absorption