A hundred percent of the recommended daily allowance (2.4 mcg daily) is enough to meet the nutritional requirements for 97.5% of the population, so 200% is very likely to be sufficient. That being ...

The dose of 2,000 micrograms of B12 is more than 800 times the recommended daily amount. So, on the face of it, this dose seems too high, but as you increase the amount in your diet, less of a ...

VITAMIN B12 is essential for the production of red blood cells and in keeping the nervous system healthy, but a lack of the vitamin could lead to vitamin B12 deficiency anaemia.

Medically reviewed by Kristie Reed, PharmD Vitamin B12, also known as cobalamin, is a water-soluble vitamin required for many ...

Medically reviewed by Sohaib Imtiaz, MD Key TakeawaysTake vitamin B12 on an empty stomach in the morning or early afternoon to maximize absorption and avoid sleep disruptions.Vegans, older adults, and ...

Vitamin B12 is essential to your body, but some people find it hard to maintain healthy levels without the help of a B12 supplement. Not everyone needs to supplement B12, but you should do so if ...

Next, you should look at the dosage of the B12 supplement you’re considering. Most offer somewhere between 250 and 5,000 micrograms (mcg) per dose. Bear in mind that the recommended daily ...

DEAR DOCTOR: I'm almost 90 years old and always tired. I took two capsules of 2,000 mcg vitamin B12 the other night, and felt stronger and not as tired. Is ...

Vitamin B12 is essential to your body, but some people find it hard to maintain healthy levels without the help of a B12 supplement. Not everyone needs to supplement B12, but you should do so if yo… ...

Several signs of toxicity can occur when a person exceeds the recommended dosage of Vitamin B12. Vitamin B12 is essential for the nervous system to function as normal and some people may take ...

DEAR DR. ROACH: I’m a vegan, and my multivitamin is my only source of B12. It states I’m getting 200% of my daily requirement. Is that sufficient? — M.E. ANSWER: People who are strict vegans ...

Dosage. B12 supplements come in doses ranging from 25 to 5,000 mcg. For older people and vegans, it is often recommended to take 25 to 100 mcg per day.