oral b12 or injection Vitamin vs Injection​ Vitamin Injections vs. Oral Supplements:

Juraschek SP, Miller ER, 3 rd , Gelber AC

If it is proven that the intestines are not able to absorb vitamin B12, 100 g of cyanocobalamin / hydroxocobalamin / hydroxocobalamin acetate are administered once a month

Pharmacology [edit] Metabolism and half-life [edit] Tesofensine has a long half-life of about 9 days (220 h) [4] "and is mainly metabolized by cytochrome P4503A4 (CYP3A4) to its desalkyl metabolite M1" NS2360

Symptoms of vitamin B12 deficiency: extreme tiredness a lack of energy pins and needles a sore and red tongue mouth ulcers muscle weakness problems with your vision psychological problems, which can range from mild depression or anxiety to confusion and dementia problems with memory, understanding and judgement Causes of a vitamin B12 deficiency: pernicious anaemia a lack of these vitamins in your diet medicine certain medicines, including anticonvulsants and proton pump inhibitors (PPIs), can affect how much of these vitamins your body absorbs

"Vitamin A."