Canadian Medical Guide > Vitamins & Mineral Food Supplement Guide

Vitamin B2 (Riboflavin)

Vitamin / Mineral Supplement Overview:
Vitamin B-2, otherwise known as riboflavin, is readily absorbed from foods, such as meat, dairy products, and fortified grains. This vitamin is essential to energy generation, nerve development, blood cell development, and the regulation of certain hormones.

How Vitamin B2 (Riboflavin) Works in the Body:
Releasing food energy
Normal growth and development
Keeps healthy mucous membranes linings together with vitamin A
Vitamin B2 (Riboflavin) keeps healthy brain and nervous system, skin, hair, and blood cells
Essential for iron, pyridoxine, and niacin functions
Could increase growth of body during development stages
Potential treatment for cheilitis

The following may benefit from Vitamin B2 (Riboflavin) supplement:
People with needed nutritional supplements
Pregnant or breastfeeding women
Substance abusers
People with excess stress or who have undergone recent surgery
Hyperthyroidism sufferers
Participants in vigorous physical activity

Foods high in Vitamin B2 (Riboflavin):
Beef liver
Dairy products
Enriched breads
Fortified cereals
Mixed vegetables
Wheat germ

Using Vitamin B2 (Riboflavin):
Available as:
Liquid: the best form due to its high bioavailability and fast absorption. Always choose liquid as your first choice when supplementing your diet.

Tablets: available

Recommended Vitamin B2 (Riboflavin) Daily Intakes
Men: 1.3 mg
Women: 1.1 mg
Pregnancy: 1.4 mg
Lactation: 1.6 mg

Medical Precautions: Consult your doctor if you have:
Are or planning to be pregnant.

Over 55:
Increased need for riboflavin.

Keep within DRI.

Keep within DRI.

Vitamin B2 (Riboflavin) Supplement Storage:
Heat and/or moisture may alter the vitamin. Refrigeration is recommended.

Symptoms of Vitamin B2 (Riboflavin) Deficiency:
Symptoms include red, swollen, cracked mouth and tongue; fatigue; depression; anemia; and greasy, scaly skin. The formation of cataracts may be a result of this vitamin deficiency.

Vitamin B2 (Riboflavin) Overdose:
Signs of Overdose:
None expected in individuals with normal kidney functioning. However, in rare cases, symptoms may be itching, numbness, a burning sensation, or light sensitivity.

Vitamin B2 (Riboflavin) Side Effects:
Reaction or effect : What to do
Yellow urine (in large doses) : No needed action.

Interacts with : Combined effect
Antidepressants (tricyclic) : Reduces B-2 efficacy.
Phenothiazines : Reduces B-2 efficacy.
Probenecid : Reduces B-2 efficacy.
Alcohol/Tobacco products : Reduces B-2 efficacy.


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