A Vitamin B12 level of 254 pg/mL is on the lower side of normal. It’s important that you do not self‑medicate. The right dose of methylcobalamin depends not only on your lab value but also on your overall health, symptoms, diet, and other parameters (such as folate, haemoglobin, or intrinsic factor) that your doctor may want to check. Your doctor will decide whether 500 mcg is appropriate or if a different dose or form (like injections) is better for you, based on your response to treatment and follow‑up tests.

Yes, a vitamin B12 deficiency can lead to glossitis, which may cause a sore, red, or inflamed tongue and sometimes manifest as cuts or cracks. To help alleviate symptoms, discuss suitable dietary changes or supplements with your doctor. Regular monitoring of your vitamin levels is also recommended.

From a medical perspective, Methycobal (methylcobalamin) 500 mcg is safe but often insufficient as a maintenance dose, because oral vitamin B12 absorption is limited and lower doses may not reliably maintain adequate levels after a proven deficiency; however, any maintenance dose (oral or injectable) must be individualized and prescribed by a doctor based on blood B12 levels, symptoms, and the cause of deficiency. Patients should not self-medicate or change doses on their own, as inappropriate dosing may delay diagnosis of underlying conditions or proper treatment. Regular follow-up and laboratory monitoring are essential to determine the correct maintenance regimen.