The reason I was wondering this was because of Natasha St. whatever her name is. She said in her videos that she had been taking B12 oral supplements for years and tested dangerously low afterwards.
Knowing that Durianrider is a big proponent of the shots and other people cite studies saying that sublinguals are just as effective, I'm wondering if anyone in our community has experienced taking b12 pills yet later testing too low.
This is a good question, isn't it? thanks guys!
Existing evidence does not suggest any differences among forms with respect to absorption or bioavailability. However the body’s ability to absorb vitamin B12 from dietary supplements is largely limited by the capacity of intrinsic factor. For example, only about 10 mcg of a 500 mcg oral supplement is actually absorbed in healthy people
In addition to oral dietary supplements, vitamin B12 is available in sublingual preparations as tablets or lozenges. These preparations are frequently marketed as having superior bioavailability, although evidence suggests no difference in efficacy between oral and sublingual forms [16,17].
Vitamin B12, in the form of cyanocobalamin and occasionally hydroxocobalamin, can be administered parenterally as a prescription medication, usually by intramuscular injection . Parenteral administration is typically used to treat vitamin B12 deficiency caused by pernicious anemia and other conditions that result in vitamin B12 malabsorption and severe vitamin B12 deficiency .
Vitamin B12 is also available as a prescription medication in a gel formulation applied intranasally, a product marketed as an alternative to vitamin B12 injections that some patients might prefer . This formulation appears to be effective in raising vitamin B12 blood levels , although it has not been thoroughly studied in clinical settings.
My b12 levels in last months test were 1476. I do injections once a month/every 2 months. I do it myself cos most docs and nurses do it too fast and it can hurt more than it has too. Not to mention I save a lot of time and money. I can literally do a shot in less than 30 seconds taking my time.
I promote what I think is best. People have to do their own homework if they are concerned about b12 status. My good mate whom has been eating raw organic animal parts for the last 10 years had lowish b12 serum levels when tested March last year. He decided to give shots ago and has no regrets. I know cos I was his 'alley doctor'.
I get too many emails from people saying how they are dropping the stubborn weight, feeling more positive, thinking clearer etc for me to not encourage b12 shots. I wouldnt waste my time with sublinguals personally.
Great question Dovima.