Besides the Vitamin B complex, I am doing the shots now. I started in February by 2 shots each 1000 mcg 3 times a week. I did this for 2 or 3 weeks. Then I decreased them to 2 times a week for 2 weeks and now I am doing 2 shots 1000 mcg each, every 2 or 3 weeks.
Today I did a blood examination and my mean corpuscular volume is still high: 97,8 fl. Tomorrow I'll visit my doctor and show her the results but it's weird that even the shots did not change the situation.