Allergic reactions and severe complications remain rare, though any sign of anaphylaxis requires immediate medical attention
Full disclosure: Inform your healthcare provider about any existing medical conditions, especially diabetes, thyroid issues, or a family history of medullary thyroid cancer or multiple endocrine neoplasia type 2
B12 injections: as this option delivers the nutrient directly into the bloodstream bypassing the area of the stomach unable to absorb it, it may be a good option for bariatric surgery patients who underwent gastric bypass to prevent a vitamin B12 deficiency
Here are the cheapest options we found: Lower dose vitamin B12 tablets (10mcg) Vitamin Store Vitamin B12 (2 for 180 tablets) at Savers and Wilko = 1p per daily dose Superdrug Energy vitamin B12 (2.99 for 60 tablets, 5p per tablet, Superdrug) = 5p per daily dose Boots Vitamin B12 (3.20 for 60 tablets, 5p per tablet, Boots) = 5p per daily dose There is also a spray which gives 10mcg per two sprays (VitSpritz vitamin B12 oral spray, 9.95 for 30ml, Sainsbury's) but it costs more per dose = 8.6p per daily dose Higher dose vitamin B12 (1200mcg) Many of these are spray formats: Better You B12 Boost oral spray 1200mcg (9.90 for 25ml, Tesco) Four sprays gives 1200mcg of B12 = 20p per daily dose
Absorption and transport [edit] Inadequate absorption of vitamin B 12 may be related to coeliac disease