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Paracetamol's bioavailability is dose-dependent: it increases from 63% for 500 mg dose to 89% for 1000 mg dose. [6] Its plasma terminal elimination half-life is 1.9–2.5 hours, [ 6 ] and volume of distribution is roughly 50 L. [ 134 ] Protein binding is negligible, except under the conditions of overdose, when it may reach 15–21%. [ 6 ]
The toxic dose of paracetamol is highly variable. In general the recommended maximum daily dose for healthy adults is 4 grams. [17] [18] Higher doses lead to increasing risk of toxicity. In adults, single doses above 10 grams or 200 mg/kg of bodyweight, whichever is lower, have a reasonable likelihood of causing toxicity.
Non-steroidal anti-inflammatory drugs[1][3] (NSAID) [1] are members of a therapeutic drug class which reduces pain, [4] decreases inflammation, decreases fever, [1] and prevents blood clots. Side effects depend on the specific drug, its dose and duration of use, but largely include an increased risk of gastrointestinal ulcers and bleeds, heart ...
The therapeutic index (TI; also referred to as therapeutic ratio) is a quantitative measurement of the relative safety of a drug. It is a comparison of the amount of a therapeutic agent that causes toxicity to the amount that causes the therapeutic effect. [1] The related terms therapeutic window or safety window refer to a range of doses ...
Ibuprofen/paracetamol. Ibuprofen/paracetamol, sold under the brand name Combogesic among others, is a fixed-dose combination of two medications, ibuprofen, a non-steroidal anti-inflammatory drug (NSAID); and paracetamol (acetaminophen), an analgesic and antipyretic. [6] It is available as a generic medication. [9][10][11]
Appearance. An equianalgesic chart is a conversion chart that lists equivalent doses of analgesics (drugs used to relieve pain). Equianalgesic charts are used for calculation of an equivalent dose (a dose which would offer an equal amount of analgesia) between different analgesics. [ 1 ] Tables of this general type are also available for NSAIDs ...
Lipinski's rule of five. Lipinski's rule of five, also known as Pfizer's rule of five or simply the rule of five (RO5), is a rule of thumb to evaluate druglikeness or determine if a chemical compound with a certain pharmacological or biological activity has chemical properties and physical properties that would likely make it an orally active ...
Clark's rule. Clark's rule is a medical term referring to a mathematical formula used to calculate the proper dosage of medicine for children aged 2–17 based on the weight of the patient and the appropriate adult dose. [1] The formula was named after Cecil Belfield Clarke (1894–1970), a Barbadian physician who practiced throughout the UK ...