B12 is Found Naturally in Animal Products Vitamin B12 is produced almost exclusively by bacteria and is concentrated in animal foods: beef and lamb (highest density), fish and shellfish (especially salmon, trout, clams), dairy, and eggs
If you do all that but still have trouble sleeping, it might be time to talk to a doctor
The suppression story, taken seriously The strongest version of the suppression argument is not nonsense, and it should not be dismissed
Dosing above 120mg/day shows no additional enzyme inhibition benefit but significantly increases peptide consumption cost
Standard initial therapy for patients without neurological involvement is 1000 mcg intramuscularly (i.m.) three times a week for 2 weeks
People taking these injections often report fewer spikes and drops in their blood sugar