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Schedule 8 (S8) drugs and poisons, otherwise known as Controlled Drugs, are schedule 9 prohibited substances that are appropriate preparations for therapeutic use which have high potential for abuse and addiction. The possession of these medications without authority is the same as carrying a prohibited substance and is illegal.
For a response of 0.25a.u., Drug B is more potent, as it generates this response at a lower concentration. For a response of 0.75a.u., Drug A is more potent. a.u. refers to "arbitrary units". In pharmacology , potency or biological potency [ 1 ] is a measure of a drug's biological activity expressed in terms of the dose required to produce a ...
The ED50 is commonly used as a measure of the reasonable expectancy of a drug effect, but does not necessarily represent the dose that a clinician might use. This depends on the need for the effect, and also the toxicity. The toxicity and even the lethality of a drug can be quantified by the TD 50 and LD 50 respectively. Ideally, the effective ...
USP 800 (Hazardous Drugs—Handling in Healthcare Settings) is a guideline created by the United States Pharmacopeia Convention (USP), as one of their General Chapters through which the USP "sets quality standards for medicines, dietary supplements and food ingredients".
In pharmacology, biological activity or pharmacological activity describes the beneficial or adverse effects of a drug on living matter. [1] [2] When a drug is a complex chemical mixture, this activity is exerted by the substance's active ingredient or pharmacophore but can be modified by the other constituents. Among the various properties of ...
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.
The prescription or possession of some substances is controlled or prohibited by the Controlled Substances Act, under the FDA and the Drug Enforcement Administration (DEA). Some US states apply more stringent limits on the prescription of certain controlled substances C-V and BTC (behind the counter) drugs such as pseudoephedrine.
The drug must be found to be effective against the disease for which it is seeking approval (where 'effective' means only that the drug performed better than placebo or competitors in at least two trials). The drug must meet safety criteria by being subject to animal and controlled human testing. Gaining FDA approval usually takes several years.