B12 (Cobalamin) : Perhaps the most well-known of all the B vitamins, B12 is vital for neurological function, DNA production and red blood cell development
In one there was no response in any parameter (HbA1c, weight or insulin dose), also mandating withdrawal
Some medications, supplements, and fiber products can affect absorption or symptoms
Common side effects include: Injection site reactions pain, redness, or swelling at the injection site Mild diarrhoea or gastrointestinal upset usually transient Skin reactions itching or rash (uncommon) Hypokalaemia rare, occurring when severe megaloblastic anaemia is corrected rapidly Serious adverse effects are extremely rare but may include anaphylaxis in hypersensitive individuals
Minor amino acids such as histidine, asparagines and cystein as regulators of NR activity (Stitt et al
A brand that markets unrealistic timelines is more likely to cut corners elsewhere too, such as under-disclosing dosage or using unstandardized ingredient sources