We have been using Nature Made Vitamin B12 1000 mcg supplement for a few weeks now and we have noticed a significant increase in our energy levels throughout the day. The time release feature ...

We’ve been using Horbäach Vitamin B12 Sublingual 1000 mcg for a few weeks now, and we’re impressed with its quality and effectiveness. The tablets dissolve quickly and easily under the tongue ...

such as 500 mcg or 1,000 mcg, but because your body absorbs only a small percentage, those doses are considered safe. A prescription form of vitamin B12 can be given as an injection, notes the NIH ...

Like most supplements, vitamin B complex can cause side effects, depending on the dose and type of vitamin B. Find a list of ...

Too much: More than 1,000 mcg of supplemental folic acid per day may mask a vitamin B-12 deficiency, leading to anemia, especially in older adults. If you’re older than 50, have your B12 levels ...