Avoid the jab
I'm a vegetarian of over 25 years and my B12 was low. My Doctor suggested the jab. I don't like what they inject you with and yes, it brings your stored levels up, but does not address maintaining levels. I tripled my B12 within 5 weeks, by using these drops. I took 3 drops, 4 to 5 times a day and my levels went from 106 to 317. Now my levels are 'normal', I will take 1 drop per day as a maintenance regime. I am so impressed with the result, so just had to share my experience.