The safety database, while extensive for clinical trials, represents limited duration and population diversity compared to the variability encountered in clinical practice
For air travel, the medication should be carried in hand luggage rather than checked baggage to maintain temperature control and prevent loss
The theoretical basis, as drawn from preclinical work, is straightforward
These injections often lead to rapid improvements in symptoms such as fatigue, numbness, or neurological disturbances, making them a preferred treatment option among those with severe deficiencies
Low-BMI, sub-160 lb, older, or side-effect-sensitive non-micro users often start at 0.3 mg, with the band still building to at least 1 mg before response is judged
While all three forms injectable, oral, and capsule offer unique advantages, they differ dramatically in bioavailability, scientific backing, and real-world outcomes