The phrase "a safe intake" is correct and usable in written English.
It can be used when discussing the recommended amount of a substance, such as food, vitamins, or medications, that is considered safe for consumption.
Example: "It is important to adhere to a safe intake of vitamins to avoid any adverse health effects."
Alternatives: "a safe dosage" or "a safe consumption level".
A safe intake of 40 mg of zinc daily is unlikely to be exceeded by food alone, although it may be exceeded by zinc lozenges or supplements, which are widely used despite a lack of data about their safety or efficacy.
Large doses of vitamin A taken by a pregnant woman also can cause developmental abnormalities in a fetus, especially if taken during the first trimester; the precise threshold for causing birth defects is unknown, but less than 3,000 μg (10,000 IU) daily appears to be a safe intake.
These screening methods are used to screen all those chemicals with a safe intake distribution.
A safe intake range for Se is currently under debate [ 9].
The data also question the validity of incorporating the default 5% absorption rate in the threshold-type risk assessment model, known as the provisional tolerable weekly intake (PTWI), to derive a safe intake level for cadmium.
A safe intake limit of 7 μg cadmium/week/kg body weight was set based on the critical renal cadmium concentration of between 100 and 200 μg/g wet weight that corresponds to a urinary threshold limit of 5 10 μg/g creatinine [ World Health Organization (WHO) 1989, 1993].
Defining an upper limit of safe intake for each AA is therefore of utmost importance [ 57].
This has been achieved for leucine, which has an upper limit of safe intake of 0.53 g/kg body weight/day in healthy subjects [ 58].
Their studies suggested that the safe intake level for an adult should be < 30 μg/day.
The safe intake of 2,000 mg a day is based on the avoidance of these gastrointestinal symptoms.
We focus first on key issues underpinning health risk assessment of low-level cadmium in the diet, including bioavailability of dietary origin, the 5% default absorption rate, thresholds and safe intake levels, and the kidney as a specific target for cadmium accumulation.
