She said that's toomuch, cut it back to 250 and we'll go back to weekly injections.The biggest danger of taking moreB-12is that you're literally pissing your money away. He also agreed that the injection before the blood test would have thrown the results out of whack.I... Can toomuch of this inactive B12 cause us problems same as toomuch of rT3 can?Can you have toomuch vitamin B12? My blood levels of vitamin B12are sky high after I took the injections for almost a year. Howmuch vitamin B12 do we need and what's the best way to get it? — TODAY.Vitamin B12is an essential water-soluble vitamin. The body doesn't make vitamin B12, so it must be obtained through food. It can be found in meat, seafood, and dairy products. A single B12 shot can contain 500 to 1000 mcg or more, going straight into circulation, bypassing the digestive filter. If the kidneys are already under strain (which is common with age, diabetes, or high blood pressure), this direct load can betoomuch to handle. Howmuch vitamin B12 should my child be getting? The average recommended amounts, measured in micrograms (mcg), vary by age: (3). Babies up to age 6 months: 0.4 mcg. How long does it take for B12 supplements to work?How long should you take 1000 mcg of B12?Can toomuch vitamin B12 cause insomnia? Not taking vitamin B12 supplements or regularly eating B12-fortified foods may explain the higher stroke risk found among vegetarians. VITAMIN B12 deficiency can affect almost every part of the body which goes to show how imperative the vitamin is for overall health. Experiencing any of these three signs relating to the feet could indicate your levels aretoo low. Treatment options include B12 injections, oral B12 supplements, and dietary changes. Injections are often preferred for individuals with malabsorption issues. 8. How long does it take to recover from B12 deficiency?10. Can you take toomuchB12? High levels of folic acid or vitamin B12 deficiency can affect fetal brain development in mice, according to a new study from researchers at the University of California, Davis. Can I get toomuchB12 from injections? Your body usually gets rid of extra B12 in your pee. But very high doses might cause side effects. Always follow your doctor’s advice about howmuch to take. Are B12 injections safe for everyone? However, toomuch vitamin B12 can cause digestive issues, such as diarrhea. Diarrhea is a common symptom of vitamin B12 overdose.The possible causes of B12-induced diarrhea can include taking toomuchB12, an allergic reaction to B12, or an underlying medical condition. Howmuch riboflavin do I need? The amount of riboflavin adults (aged 19 to 64) need is about: 1.3mg a day for men.What happens if I take toomuch vitamin B12? There's not enough evidence to show what the effects may be of taking high doses of vitamin B12 supplements each day. Yet B12 supplements remain controversial. There are two theories: moreB12 increases energy production, since endurance running breaks down cells and depletes vitamin B12, and moreB12 means more red blood cells produced for oxygen delivery.