Drinking heavily can make it harder for your body to absorb nutrients, including B12
I recommend: at least 2,000 mcg (g) cyanocobalamin once each week, ideally as a chewable, sublingual, or liquid supplement taken on an empty stomach or at least 50 mcg daily of supplemental cyanocobalamin or a serving of B12-fortified foods three times a day, each containing at least 190 percent of the Daily Value listed on the nutrition facts label Those over 65 years of age should take at least 1,000 mcg (g) cyanocobalamin every day
In summer, days are 15 hours long and in winter only 9 hours of daylight
Inject before bed, at least 2 hours after your last meal
It is contraindicated in certain conditions such as active malignancy and must be used cautiously in those with diabetes, prediabetes, or a history of pituitary disease, which is why careful screening and regular monitoring are essential
That is the entire basis for the you can take it orally framing you will see repeated online