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.

A homocysteine level of 42 ?mol/L is elevated, but it is very manageable. The most effective way to lower it is by supplementing with specific B vitamins, as deficiencies are the most common cause. You should consider taking Vitamin B12 (cobalamin), Vitamin B9 (folic acid or methylfolate), and Vitamin B6 (pyridoxine). Sometimes, a supplement called betaine (TMG) is also suggested. I highly recommend consulting your doctor to check your baseline vitamin levels. This will help determine the exact dosages you need. Please do not worry, as this is a very common issue that typically responds well to these simple dietary supplements.

Methycobal, which is methylcobalamin (Vitamin B12), is highly unlikely to be the cause of your symptoms. In fact, this medicine is typically prescribed to help treat nerve tingling, weakness, and fatigue. The symptoms you described?including muscle weakness, difficulty walking, and facial shaking?suggest there may be an underlying neurological issue or an unresolved deficiency that needs closer attention. Please be reassured that these symptoms can be properly investigated. I highly recommend scheduling an appointment with your healthcare provider or a neurologist soon so they can evaluate you and help you feel better.

While your vitamin B12 level of 350 is within the normal range, it is on the lower side (borderline), and your symptoms may be related but are not specific to a deficiency. Taking 500 mcg of methylcobalamin daily is generally safe and may help improve symptoms over time. However, it is advisable to consult your doctor first to rule out other causes of your foot pain, such as vitamin D deficiency, anaemia, or nerve issues, and to receive appropriate treatment.

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.

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.