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Products such as Imferon, which contained high molecule weight iron dextran, were the only IV iron products available until the 1990s. [4] Although uncommon adverse reaction did occur, as such packaging informed users of the possible reactions and highly recommended completing a test dose before further treatment.
Another use is in the therapeutic drug monitoring of drugs with a narrow therapeutic index. For example, gentamicin is an antibiotic that can be nephrotoxic (kidney damaging) and ototoxic (hearing damaging); measurement of gentamicin through concentrations in a patient's plasma and calculation of the AUC is used to guide the dosage of this drug ...
In pharmacokinetics, a loading dose is an initial higher dose of a drug that may be given at the beginning of a course of treatment before dropping down to a lower maintenance dose. [ 1 ] A loading dose is most useful for drugs that are eliminated from the body relatively slowly, i.e. have a long systemic half-life .
Once a drug's bioavailability has been established it is possible to calculate the changes that need to be made to its dosage in order to reach the required blood plasma levels. Bioavailability is, therefore, a mathematical factor for each individual drug that influences the administered dose.
To ensure that the drug taker who has poor absorption is dosed appropriately, the bottom value of the deviation range is employed to represent real bioavailability and to calculate the drug dose needed for the drug taker to achieve systemic concentrations similar to the intravenous formulation. [4] To dose without knowing the drug taker's ...
The term injection encompasses intravenous (IV), intramuscular (IM), subcutaneous (SC) and intradermal (ID) administration. [ 35 ] Parenteral administration generally acts more rapidly than topical or enteral administration, with onset of action often occurring in 15–30 seconds for IV, 10–20 minutes for IM and 15–30 minutes for SC. [ 36 ]
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˙ is the mass generation rate of the substance - assumed to be a constant, i.e. not a function of time (equal to zero for exogenous (foreign) substances/drugs) [mmol/min] or [mol/s] t is dialysis time or time since injection of the substance/drug [min] or [s] V is the volume of distribution or total body water [L] or [m 3]