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In toxicology, the median lethal dose, LD 50 (abbreviation for "lethal dose, 50%"), LC 50 (lethal concentration, 50%) or LCt 50 is a toxic unit that measures the lethal dose of a given substance. [1] The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test duration.
Trazodone is usually used at a dosage of 150 to 300 mg/day for the treatment of depression. [ 17 ] [ 13 ] Lower doses have also been used to augment other antidepressants or when initiating therapy. [ 17 ] [ 13 ] Higher doses, up to 600 mg/day, have been used in more severe cases of depression (in hospitalized patients, for example). [ 29 ]
The median toxic dose encompasses the category of toxicity that is greater than half maximum effective concentration (ED 50) but less than the median lethal dose (LD 50). However, for some highly potent toxins (ex. lofentanil , botulinum toxin ) the difference between the ED 50 and TD 50 is so minute that the values assigned to them may be ...
The median effective dose is the dose that produces a quantal effect (all or nothing) in 50% of the population that takes it (median referring to the 50% population base). [6] It is also sometimes abbreviated as the ED 50, meaning "effective dose for 50% of the population". The ED50 is commonly used as a measure of the reasonable expectancy of ...
Niaprazine (Nopron) – a drug related to this group but does not inhibit the reuptake of serotonin or the other monoamines. Medifoxamine (Clédial, Gerdaxyl) – could perhaps technically be said to belong to this group, as it is a serotonin–dopamine reuptake inhibitor and 5-HT 2A and 5-HT 2C receptor antagonist , but not grouped as such.
For many drugs, severe toxicities in humans occur at sublethal doses, which limit their maximum dose. A higher safety-based therapeutic index is preferable instead of a lower one; an individual would have to take a much higher dose of a drug to reach the lethal threshold than the dose taken to induce the therapeutic effect of the drug.
Download as PDF; Printable version; In other projects ... This is a list of adverse effects of the antidepressant trazodone, sorted by frequency of occurrence. [1 ...
An atypical antidepressant is any antidepressant medication that acts in a manner that is different from that of most other antidepressants. Atypical antidepressants include agomelatine, bupropion, iprindole, mianserin, mirtazapine, nefazodone, opipramol, tianeptine, and trazodone.