From what I see online methycobal is an abbreviation that might be used for methylcobalamin.

That seems pretty expensive where you are.
I'd contact iherb.com and see if they ship to where you
are located. They do to lots of countries in fact.

When you use orally, make sure it is on an empty stomach for best absorption.

Since your serum creatinine is normal, I'd not worry about your dosing.
The high levels do have a function, however. It is not to show toxicity, but to alert doctors to hidden disease states which sometimes show
high blood levels in testing. Kidney failure and some leukemias, and intestinal inflammations from bacteria may show high B12 levels as a sign. The B12 itself is not doing harm, but in people NOT taking supplements may be a signal to do further testing on the patient. Doctors get used to "flagged" results meaning danger...only in this case it is a referred danger and not a toxic one.