The answer depends entirely on which formulation you are using
Clinical medicine (London, England), 15(2), 145150
Using certain medications Some commonly prescribed medications can affect how the body absorbs B-12
Nuts and seeds Just a handful of nuts or seeds provide a meaningful dose of iron, along with heart-healthy, blood-sugar stabilizing fats, fiber and other compounds
If headaches persist despite lifestyle changes, or if you experience: Severe, sudden headaches Vision changes Weakness or numbness Confusion or memory loss Seek medical help immediately, as these could indicate a more serious condition
Here are common red flags to watch for: Recognizing these symptoms early allows doctors to test nerve function and address underlying causes such as diabetes, poor circulation, or vitamin deficiency