In any case, being careful while pregnant should be the norm
The difference comes down to manufacturing environment, formulation specifics, and testing depth
diseases of the liver, kidneys and the blood (such as leukaemia) can be considered potential reasons for an increased B12 blood level (1-4)
I have so much energy after I take it
Males symptoms are more subtle but equally dramatic in terms of loss of energy, fatigue
Fresh meat (cooled, frozen or fresh) Freshly caught fish Chicken (skinned and fresh ) Egg yolk Fresh fruits with the exception of strawberries, most fresh fruits are considered to have a low histamine level (also see histamine liberators below) Fresh vegetables with the exception of tomatoes Grains rice noodles, yeast free rye bread, rice crisp bread, oats, puffed rice crackers, millet flour, pasta (spelt and corn based) Fresh pasteurised milk and milk products Milk substitutes coconut milk, rice milk Cream cheese, butter (without the histamine generating rancidity) Most cooking oils Most leafy herbs Most non-citric fruit juices Herbal teas with the exception of those listed as DAO blockers