Its really important to understand that how you take B12 matters
References References Selective and membranepermeable small molecule inhibitors of NNMT Roles of Nicotinamide NMethyltransferase in Obesity and Type 2 Diabetes Nicotinamide Nmethyltransferase inhibition mimics and boosts exercisemediated improvements in muscle function in aged mice Reduced calorie diet combined with NNMT inhibition establishes a healthier gut microbiome in obese mice Kraus et al
B-Complex (B1, B2, B3, B5, B6) - Together these B vitamins help boost energy levels and combat the effects of stress by aiding the adrenals, promoting stronger immunity, healthy skin, hair, and nails, and supporting the reproductive and nervous systems
Tiaminal B12 Injection and International Variations Outside the US, theres Tiaminal B12 injection
Is it safe to take vitamin B12 supplements daily