B12 from food and supplements has to pass through a fairly involved process in the stomach and gut before your body can use it, and that process becomes less efficient with age, with certain medications, and with diets that include little or no animal protein
Research shows that low serum vitamin B-12 levels are linked to decreased bone density, which can lead to fragile bones and a higher risk of osteoporosis
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
Research-grade peptides are available from various vendors, typically costing between $30 and $80 for a 5mg vial
If you have any concerns or questions, consult a medical expert or your supervisor for guidance
