Glossary and Definitions Distribution: Drug distribution is the process by which a drug reversibly leaves the bloodstream and enters the (extracellular fluid) and / or the cells of the tissues. The delivery of a drug from the plasma to the primarily depends on blood flow, capillary permeability, the degree of binding of the drug to plasma and tissue proteins, and the relative of the drug. Excipient: Vehicle. A more or less inert substance added in a prescription as a diluent or vehicle or to give form or consistency when the remedy is given in pill form; simple syrup, aromatic powder, honey, and various elixirs are examples.
Gel: A colloidal state in which the molecules of the dispersed phase form a three-dimensional structure in the continuous phase to produce a semisolid material such as a jelly. For example, a warm, dilute (2 percent) solution of gelatin (a protein mixture) forms, on cooling, a stiff gel in which the molecules of the continuous phase are trapped in the holes of a ‘brush-heap’ like structure of the gelatin. Administered orally. Microemulsion: Microemulsion are thermodynamically stable, optically transparent, isotropic mixtures of a bi phasic oil-water system stabilized with surfactants. The diameter of droplets in a micro emulsion may be in the range of 100 A to 1000 A.
The Essay on Liposome An Advantage In Drug Delivery
... injection, ether injection, double emulsion vesicle method, reverse phase evaporation vesicle method, and stable plurilamellar vesicle method. ... the tools of biophysics in evaluating liposomal dosage forms. Liposomes have covered predominantly medical, albeit some non ... size numbers of bilayers influence the extent of drug encapsulation being classified in Table 1. S.No.TypeSize RangeCharacteristics ...
Microemulsion may be formed spontaneously by agitating the oil and water phases with carefully selected surfactants. The type of emulsion produced depends upon the properties of the oil and surfactants utilized. Ointment: Semisolid preparations intended for topical application. Most ointments a reapplied to the skin, although they may also be administered, nasally, aurally, rectally, or vaginally. With a few exceptions, ointments a reapplied for their local effect on the tissue membrane rather than for systematic effects. Professional skills: Body of systematic scientific knowledge, manual dexterity and deftness, proficiency, resulting from training, practice and experience particular of an individual who has completed the formal education and examination required for membership in a profession.
Water: A clear, colorless, odorless and tasteless liquid, H 2 O that is essential for most plant and animal life and is most widely used of all solvents. Any of the various forms of water, as rain. A bodily fluid, as urine, perspiration or tears. Any of various liquids that contain and somewhat resemble water. Naturally occurring water exerts its solvent effect on most substances it contacts and thus is impure and contains varying amounts of dissolved inorganic salts, usually sodium, potassium, calcium, magnesium iron, chlorides, sulfates and bicarbonates as well as dissolved and undissolved organic matter and microorganisms.
