Toor says her patients rave about their benefits, and she herself relies on them when she needs a boost, like when shes worn out from a long airplane flight or when I havent been goodyou cant do everything perfectly all the time, and B12 helps. For me she recommended shots every two weeks
Always follow your clinicians specific instructions
The published research on oral B12 bioavailability consistently shows around 1% absorption meaning of a 1000mcg oral dose, only about 10mcg actually reaches your cells
Why Diagnosis Matters Before Treatment Taking B12 without understanding the cause can sometimes delay proper diagnosis
If you have malabsorption syndrome (such as short bowel syndrome, certain bariatric surgery patients, chronic pancreatitis, or celiac disease that severely impairs nutrient uptake), you might need these injections indefinitely to prevent recurrent deficiencies