Labina do a search here on methycobalamin b12 and vitamin D3. you can buy and take these vitamins orally yourself. orally taking vitamin methylcobalamin b12 has been shown to be effective in raising your B12 levels. I would take 5000 mcg a day in your case. there are places on line to buy it. Vitamin D3 has also been shown to be more effective than the vitamin D2 that doctors are prescribing.