Delayed-Action Preparations - MeSH

Select item 680036921.

Dosage forms of a drug that act over a period of time by controlled-release processes or technology.

Select item 820036922.

Delayed-Action Preparations [Pharmacological Action]

Select item 680493883.

Anhydride polymers with a repeating structure of RC(=O)OC(=O)R. They readily hydrolyze in water making them useful for DELAYED-ACTION PREPARATIONS.

Year introduced: 2005

Select item 680113554.

Prodrugs

A compound that, on administration, must undergo chemical conversion by metabolic processes before becoming the pharmacologically active drug for which it is a prodrug.

Year introduced: 1989(1988)

Select item 680043435.

Drug Implants

Small containers or pellets of a solid drug implanted in the body to achieve sustained release of the drug.

Year introduced: 1975

Select item 680043376.

Drug Carriers

Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.

Year introduced: 1988

MeSH

NLM Controlled Vocabulary

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