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Acceptable daily intake or ADI is a measure of the amount of a specific substance (originally applied for a food additive, later also for a residue of a veterinary drug or pesticide) in food or drinking water that can be ingested (orally) daily over a lifetime without an appreciable health risk. [1]
Tizanidine is a derivative of 2,1,3-benzothiadiazole and its first published synthesis was reported in a patent. [17] The 5-chloro-2,1,3-benzothiadiazol-4-amine intermediate was a known compound, produced in three steps from 4-chlorophenylenediamine as shown. [ 18 ]
Tolerable daily intake (TDI) refers to the daily amount of a chemical contaminant that has been assessed safe for human being exposure on long-term basis (usually whole lifetime). [1] TDI specifically occurs to chemicals that humans are exposed to unintentionally or as a contaminant, [ 1 ] where acceptable daily intake refers to chemicals that ...
The maximum dose is used, rather than a lower dose, to reduce the number of test subjects (and, among other things, the cost of testing), to detect an effect that might occur only rarely. This type of analysis is also used in establishing chemical residue tolerances in foods. Maximum tolerated dose studies are also done in clinical trials.
The recommended adequate intake of sodium is 1,500 milligrams (3.9 g salt) per day, and people over 50 need even less." [13] The Daily Value for potassium, 4,700 mg per day, was based on a study of men who were given 14.6 g of sodium chloride per day and treated with potassium supplements until the frequency of salt sensitivity was reduced to 20%.
Their daily limits range from 10-48 g per day for both men women, and weekly limits range from 27-196 g/week for men and 27-140 g/week for women. The weekly limits are lower than the daily limits, meaning intake on a particular day may be higher than one-seventh of the weekly amount, but consumption on other days of the week should be lower.
Other substances considered contaminants are assessed a tolerable daily or weekly intake, TDI or TWI, respectively. [3] Tolerable intakes, whether daily, weekly, or monthly, should not be confused with reference daily intake, or RDI. RDI refers to the amount of a given nutrient individuals should uptake to maintain health.
Tolerable daily intake – Amount of a chemical contaminant that is safe; No-observed-adverse-effect level – Denotes the level of exposure of an organism without any observed adverse effects; Lowest-observed-adverse-effect level; Reference dose – Maximum acceptable oral dose of a toxic substance in the US