a health care practitioner knows that safety when dispensing medication is extremely important and recognizes that different dosages of a drug bring variations in the speed of action or effectiveness. her client comments that he thinks he will be cured if he takes his medication all at once. how does the health care practitioner define this level of dosage?

The lethal dose (LD) is a measure of a substance's or radiation's deadly toxicity in toxicology. The "lethal dosage" designates a dose (often expressed as dose per kilogram of subject body weight) at which a specific percentage of individuals will succumb since resistance varies from subject to subject. For gases or particles, the deadly concentration is a measurement of the fatal dosage. The LD may not apply to all sub-populations because it is built on the idea of the "standard person," a hypothetical person with all "normal" traits. The amount of drug delivered per unit mass of the test subject is how the LD50 is normally described; it is typically reported as milligrams of substance per kilogram of body mass, although it may also be stated as nanograms.

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