I'm really concerned about my husband's health. He recently got his blood test results and his B12 level is really low at 119. The doctor recommended he take a Hosit tablet every day and mix Convales powder in water. He's been following this regimen for the past 10 days, but he hasn't noticed any improvement. We're wondering if this is the right treatment plan or if he should have had an injection to quickly get his B12 levels up to around 300. What do you think?