In 2007, I had my B-12 level tested as part of my blood work and the result was a level of 532.
About a year ago, I began taking one Jarrow's Methyl B-12 5000 mcg tablet per day at bedtime on an empty stomach. Again, my total dosage over the last year was 5000 mcg per day of Methyl B-12.
I just had my B-12 level re-tested for the first time both since 2007, and when I first began taking the B-12 daily a year ago.
My new September, 2011 B-12 level just came in at 1882 (an increase of 1350), which proves that oral Methyl B-12 is absorbed as advertised.
Important real-world data for those who are interested!