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Vitamins Produced by Probiotics

author image Annie Summers
Annie Summers began writing educational materials in 1975. She covers medical topics for various websites and authors public health materials. Summers is registered and certified as a medical/surgical assistant and EKG technician. She is also licensed as a pharmacy technician.
Vitamins Produced by Probiotics
Microscopic bacteria can make some vitamins. Photo Credit moodboard/moodboard/Getty Images


When you look at a carton of yogurt or a bottle of capsules, the probiotics listed are usually Lactobacillus acidophilus and possibly other lactobacilli along with one or more bifidobacterium species. However, a probiotic bacteria is any bacteria that is helpful to its host. Some help with digestion and some colonize to take up space that might be used by harmful bacteria. Some also make vitamins, and the friendly version of E. coli is one of these. You should not depend on your own bacteria to make enough of each vitamin to meet all your daily requirements, but they can help.

Vitamin K

Vitamins Produced by Probiotics
Some green vegetables supply vitamin K. Photo Credit Noam Armonn/Hemera/Getty Images

There are 2 types of natural vitamin K. K1 is made by plants. K2 in humans is made by bacteria in the large intestine and is essential for blood clotting. Your body can use both K1 and K2, and healthy people can get enough of these from their food and their own bacteria. Other forms of vitamin K are synthetic and are used medically as a substitute for the natural vitamins.

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Vitamins Produced by Probiotics
Egg yolks are a source of biotin. Photo Credit ugurv/iStock/Getty Images

Biotin is considered one of the B complex vitamins. Its function in your body is to assist enzymes to metabolize fat and carbohydrates and to assimilate some amino acids. All life forms require biotin. It can only be formed by bacteria, yeasts, molds, algae and some plants. It has now been established that you can absorb some of the biotin made by your own intestinal bacteria.

Folic Acid

Vitamins Produced by Probiotics
Leafy greens are rich in folic acid. Photo Credit SpencerSternberg/iStock/Getty Images

Folic acid is another B complex vitamin that is produced by intestinal bacteria. Neural tube birth defects are associated with folic acid deficiency during pregnancy. Folic acid is essential for the synthesis of RNA and DNA as well as for the formation of red blood cells. A type of anemia results from deficiency of folic acid. This vital nutrient is abundant in leafy green vegetables.

Vitamin B12

Vitamins Produced by Probiotics
Meat and cheese contain vitamin B12. Photo Credit oqba/iStock/Getty Images

Natural vitamin B12 is only made by bacteria. Your own probiotic bacteria produces some. You also can consume vitamin B12 made by bacteria in animals and distributed in their meat or milk. Its function in your body is the maturation of red blood cells and with folic acid in the folate form, to synthesize DNA. Deficiency results in a serious form of anemia.

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  • “European Journal of Cancer Prevention”; Intestinal Flora and endogenous vitamin synthesis; MJ Hill; Supplement: March, 1997
  • “Journal of Parenteral & Enteral Nutrition” Observations on Possible Effects of Daily Vitamin K Replacement, Especially Upon Warfarin Therapy; Bern, Murray MD; November/December, 2004
  • Jane Higdon, Ph.D.; Linus Pauling Institute Oregon State University; June, 2004
  • “American Journal of Physiology”; Biotin uptake by human colonic epithelial NCM460 cells: a carrier-mediated process shared with pantothenic acid. Said, Ortiz, McCloud, Dyer, Moyer, Rubin; November, 1998
  • “The Merck Manual” Seventeenth Edition; Editors Beers, MD and Berkow, MD;1999
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