why do vitamins make urine bright yellow

Vitamin B-complex supplements include all the B vitamins including riboflavin, also called vitamin B-2. Riboflavin causes urine to turn bright yellow when you ingest it in excess. Your body requires riboflavin to break down carbohydrates, proteins and fats and release energy from those nutrients in all of your body s cells. It assists with growth and production of red blood cells. Riboflavin also enables your body to use oxygen. Most people in the U. S. meet or exceed riboflavin recommendations, which vary from 0. 3 mg per day to 1. 1 mg per day, depending on age and gender, according to MedlinePlus. Riboflavin occurs in milk and dairy products, whole grains and dark green leafy vegetables, such as broccoli, turnip greens, asparagus and spinach. Eggs, lean meats, nuts and legumes also provide riboflavin. Breads and cereals may also be fortified with added riboflavin. Although milk and liver are the richest sources of riboflavin, nutritional yeast, dark green vegetables and whole or enriched grains provide an ample source for vegans who do not consume dairy products or meat.


Food processing may destroy some vitamins, but little riboflavin is lost during ordinary cooking because riboflavin is stable to heat. Ultraviolet light and irradiation destroy riboflavin, so milk is sold in cardboard or other opaque containers. Precautions must be taken when adding vitamin D to milk by irradiation, according to Eleanor Whitney, Ph. D. , and Sharon Rolfes, M. S. , R. D. , authors of Understanding Nutrition. The vitamin B complex includes thiamin, riboflavin, niacin, biotin, pantothenic acid, vitamin B-6, folic acid and vitamin B-12. Vitamin and mineral supplements may be appropriate in some circumstances, such as to correct overt deficiencies and reduce the risk of certain diseases.


At high or therapeutic doses, a supplement acts as a drug; use it only with the recommendation of your physician or registered dietitian. More than half of the U. S. population takes vitamin and mineral supplements regularly, and 1 in 5 people take a multinutrient supplement daily, as reported by Whitney and Rolfes. B vitamins are water-soluble and move directly into the blood, where they travel freely throughout the body. Your kidneys detect excess riboflavin, which is excreted in the urine. This excess riboflavin, especially when you consume it in large doses, causes the urine to take on a characteristic bright yellow color. This expected result is no cause for alarm, according to MayoClinic. com. Consult your health care professional if you notice other unusual effects. Lack of riboflavin causes inflammation of membranes of the mouth, eyes, skin and gastrointestinal tract.


Itching and burning eyes, sensitivity to light, reddening of your corneas, sore tongue, and itching or peeling skin and cracks in the corners of your mouth may occur. Your doctor or registered dietitian may recommend riboflavin.
Whether you pop a multivitamin daily (or at least when you remember to take one) or you religiously swallow a whole cluster of vitamins that range from A to zinc, thereБs no denying that thereБs a lot of misinformation surrounding these little pills. Get the facts behind 10 common supplement-taking scenarios, as well as expert advice on what you should (or shouldnБt) do when it comes to getting the most out of your vitamin supplements. Situation: You just started taking vitamins and your urine is an orange-y yellow. You Think: Yikes, this means IБm peeing out all the good stuff! The Truth: This is actually quite normal when taking multivitamins or B-complex vitamins.


БYour urine will often turn a bright yellow or orange color due to the presence of vitamin B2, also known as riboflavin,Б says Tieraona Low Dog, MD, clinical associate professor of medicine at the Arizona Center for Integrative Medicine at the University of Arizona. The vitaminБs name gives you a hint: Flavin comes from the word flavus, which means yellow. БYour body just excretes what it doesn't need Б itБs perfectly harmless,Б says Dr. Low Dog. If the color bothers you, simply drink more water to dilute your urine, suggests Esther Blum, R. D. , author of Secrets of Gorgeous. Situation: You hate the taste of most veggies and can barely choke down broccoli. You Think: IБll just get those nutrients from supplements Б itБs the same thing. The Truth: To get all of the healthy, disease-fighting benefits from vegetables, itБs always best to eat the real deal rather than a pop a pill.


A recent study from Oregon State University found that an important phytochemical in broccoli and other similar veggies is poorly absorbed and much less beneficial when taken in supplement form. When it comes to these crunchy vegetables Б as the song goes Б ainБt nothing like the real thing, baby. Situation: YouБre still using the same bottle of multivitamins that youБve had for over a year. You Think: Vitamins donБt really go bad, so it doesnБt matter how old they are. The Truth: You should check that expiration date and buy a new bottle if itБs already past its prime. БVitamins lose their potency over time, by as much as 10 to 20%,Б says Susan Dopart, RD, co-author of A Recipe for Life by The DoctorБs Dietitian. Taking expired vitamins may not be dangerous, but itБs less beneficial Б and possibly a waste of time.