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The 71st Edition, published in 2017, was the final hardcover edition, weighed in at 4.6 pounds (2.1 kg) and contained information on over 1,000 drugs. [1] Since then, the PDR has been available online for free. The Physicians' Desk Reference was first published in 1947 by Medical Economics Inc., a magazine publisher founded by Lansing Chapman. [2]
Package inserts for prescription drugs often include a separate document called a "patient package insert" with information written in plain language intended for the end-user—the person who will take the drug or give the drug to another person, such as a minor. Inserts for over-the-counter medications are also written plainly. [1] [2]
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After die filling, the upper punch is lowered into the die and the powder is uniaxially compressed to a porosity of between 5 and 20%. The compression can take place in one or two stages (main compression, and, sometimes, pre-compression or tamping) and for commercial production occurs very fast (500–50 mg per tablet).
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. [3] AUC becomes useful for knowing the average concentration over a time interval, AUC/t.
Venlafaxine, sold under the brand name Effexor among others, is an antidepressant medication of the serotonin–norepinephrine reuptake inhibitor (SNRI) class. [6] [9] It is used to treat major depressive disorder, generalized anxiety disorder, panic disorder, and social anxiety disorder. [9]
A drug class is a group of medications and other compounds that share similar chemical structures, act through the same mechanism of action (i.e., binding to the same biological target), have similar modes of action, and/or are used to treat similar diseases.
The metabolism of bupropion is highly variable: the effective doses of bupropion received by persons who ingest the same amount of the drug may differ by as much as 5.5 times (with a half-life of 12–30 hours), while the effective doses of hydroxybupropion may differ by as much as 7.5 times (with a half-life of 15–25 hours).