Friday, May 11, 2007
Pharmacokinetics is a division of pharmacology dedicated to the purpose of the fate of substances administered externally to a breathing organism. In practice, this regulation is applied mainly to drug substances, though in standard it concerns itself with all way of compounds ingested or otherwise delivered superficially to an organism, such as nutrients, metabolites, hormones, toxins, etc. Pharmacokinetics is often divided into numerous areas including, but not limited to, the level and rate of Absorption, Distribution, Metabolism and Excretion. This sometimes is referred to as the ADME system.
Absorption is a core entering the body. Distribution is the dispersion or diffusion of substances throughout the fluids and tissues of the body. Metabolism is the conversion of the substances and its daughter metabolites. Excretion is the abolition of the substances from the body. In unusual cases, some drugs irreversibly accumulate in a hankie in the body.
Pharmacokinetics is often studied in concurrence with pharmacodynamics. So while pharmacodynamics explores what a drug does to the body, pharmacokinetics explores what the body does to the medicine.
Wednesday, May 09, 2007
The Food and Drug Administration (FDA) is an organization of the United States Department of Health and Human Services and is liable for regulating food, dietary supplements, drugs, biological medical products, blood products, medical devices, radiation-emitting devices, veterinary products, and cosmetics in the United States.
As an administrative agency in the managerial branch of the government of the United States of America, the FDA derives all of its ability and jurisdiction from various acts of the United States Congress. The major source of the FDA's authority is the Federal Food, Drug, and Cosmetic Act. This act gave the FDA different responsibilities including the responsibility of ensuring that no adulterated or misbranded food, drug or medical devices enter into throughway commerce.
The FDA has the power to control a multitude of products in a manner that ensures the security of the American public and the efficiency of marketed food, medical, and cosmetic products. Regulations may take numerous forms, including but not limited to absolute ban, controlled distribution, and controlled marketing. Moreover, the FDA sets the standards under which individuals may be licensed to stipulate drugs or other medical devices. Regulatory enforcement is carried out by Consumer Safety Officers within the Office of Regulatory Affairs and illegal matters are handled by particular agents within the Office of Criminal Investigations (OCI).
Cosmetics are synchronized by the Center for Food Safety and Applied Nutrition, the similar branch of the FDA that regulates food. Cosmetic products are not normally subject to pre-market support by the FDA. However, all color additives must be particularly approved by the FDA before they can be included in cosmetic products sold in the U.S. The labeling of cosmetics is synchronized by the FDA, and cosmetics which have not been subjected to careful safety testing must bear a warning to that effect.