Tolerable Upper Intake Level Vitamin C

The tolerable upper intake level ul is the maximum level of total chronic intake of a nutrient from all sources judged to be unlikely to pose a risk of adverse health effects in humans.

Tolerable upper intake level vitamin c. The present report details current and past research examining potential adverse effects of supplemental vitamin c. The scf opinions covered 22 out of the 29 nutrients which were considered to be within its mandate for this task. For this reason uls upper tolerable intake levels have been established for many nutrients.

Fruits and vegetables are the best sources of vitamin c see table 2 citrus fruits tomatoes and tomato juice and potatoes are major contributors of vitamin c to the american diet other good food sources include red and green peppers kiwifruit broccoli strawberries brussels sprouts and cantaloupe see table 2 8 12. A tolerable upper intake level ul is the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects to almost all individuals in the general population. And nutrition board used the same data but applied an uf of only 1 5 to give a noael of 2 000 mg which it adopted as the tolerable upper intake for adults ranging down to 400 mg in children aged 1 3 years.

Vitamin c chloride fluoride iron phosphorus potassium. Bthe ul for vitamin a applies to the preformed vitamin only. Tolerable upper intake levels uls by life stage group vitamin c tocopherol selenium life stage group mg d mg d µg d 0 through 6 mo nd nd 45 7 through 12 mo nd nd 60 1 through 3 y 400 200 90 4 through 8 y 650 300 150 9 through 13 y 1 200 600 280 14 through 18 y 1 800 800 400 19 through 70 y 2 000 1 000 400 70 y 2 000 1 000 400.

Adequate intake ai sources of vitamin c food. The scf did not have sufficient time to adopt opinions for the following vitamins and minerals. There is an increased risk of an adverse event when exceeding the ul although sometimes the risk is acceptable when the nutrient is used in medical treatment such as to treat a severe deficiency.

These are intended to be. C tolerable upper intake levels ul for vitamins tolerable upper intake levels ul for minerals athe ul for niacin and folate apply to synthetic forms obtained from supplements fortified foods or a combination of the two. Suls and guidance levels incidated by set by the expert group on vitamins and minerals of the food standards agency united kingdom.

Unless otherwise specified the ul represents total intake from food water and supplements. A major task of the panel is to analyze the evidence of adverse effects of high dose vitamin c intakes to derive if appropriate a tolerable upper intake level ul for vitamin c. Following a request from the european commission the scientific committee on food scf which.