Tolerable Upper Intake Level Ul Of Vitamin A

It is complemented by fortifying foods with vitamin a.

Tolerable upper intake level ul of vitamin a. Following a request from the european commission the scientific committee on food scf which. The scf did not have sufficient time to adopt opinions for the following vitamins and minerals. Bthe ul for vitamin a applies to the preformed vitamin only.

Suls and guidance levels incidated by set by the expert group on vitamins and minerals of the food standards agency united kingdom. If the nutrient intake increases above the tolerable upper intake level or ul the risk of ill effects may also increase. Rdas for vitamin a are given as retinol activity equivalents rae to account for the different bioactivities of retinol and provitamin a carotenoids all of which are converted by the body into retinol see table 1.

B rda recommended dietary allowance ai adequate intake indicated with c ul tolerable upper intake level from food supplements combined d sul safe upper levels. Vitamin a supplementation reduces vad and increases child survival. Vitamin c chloride fluoride iron phosphorus potassium.

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. 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. Unless otherwise specified the ul represents total intake from food water and supplements.

Tolerable upper intake level ul. Food and nutrition board institute of medicine in the us. Opinions on tolerable upper intake levels of individual vitamins and minerals.

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. A ul 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. For this reason uls upper tolerable intake levels have been established for many nutrients.