They also need to adjust the schedule of treatments
So, we recommend using SL vitamin B12 rather than oral and IM, especially in patients who do not tolerate IM injection and patients who need prolonged vitamin B12 supplementation, such as patients with long-term metformin use and patients with pernicious anemia or with gastro-duodenal resection [51,52,53,54]
Patients can receive as many as two injections per week based on their goals
Medical professionals may recommend periodic reassessment of treatment goals and effectiveness
Specific clinical scenarios where injections are the standard of care include pernicious anemia, severe malabsorption syndromes, post-bariatric surgery when oral supplementation has failed, and critically low serum B12 levels accompanied by neurological deterioration