What is meant by drug delivery?
Drug delivery is the method or process of administering a pharmaceutical compound to achieve a therapeutic effect in humans or animals. For the treatment of human diseases, nasal and pulmonary routes of drug delivery are gaining increasing importance.
How does drug delivery work?
Drug delivery systems are engineered technologies for the targeted delivery and/or controlled release of therapeutic agents.Drug delivery systems control the rate at which a drug is released and the location in the body where it is released. Some systems can control both.
What is the distinction between a drug and a medicine?
Drugs are considered to be such things as stimulants, narcotics, and hallucinogens, and often are used in the medical field to treat or cure disease. Medicine, however, is our term for a drug when that drug is used to cure, mitigate, treat, or prevent a disease.
Which nanoparticles are used in drug delivery?
Chitosan exhibits muco-adhesive properties and can be used to act in the tight epithelial junctions.
Alginate.
Xanthan gum.
Cellulose.
Liposomes.
Polymeric micelles.
Dendrimers.
Inorganic nanoparticles.
As far as drug delivery is concerned, the most important nanoparticle platforms are liposomes, polymer conjugates, metallic nanoparticles (for example AuNPs), polymeric micelles, dendrimers, nanoshells, and protein and nucleic acid-based nanoparticles
What is oral drug delivery system?
More specifically, an oral controlled release drug delivery system is, in principle, a deviceor dosage form that controls drug release into the absorption site in the gastrointestinal (GI) tract. It controls the drug absorption rate to achieve the desired plasma profiles defined by the steady- state pharmacology.
Oral drug delivery is the most preferred and convenient option as the oral route provides maximum active surface
What are the 5 ways drugs can enter your body?
The Path Drugs Take Through the Body. Substances can enter the body through various means. Drugs can be smoked, snorted, injected, swallowed (pills, capsules, liquids), or applied through transdermal means (applied to the skin). 1,2 Some substances canbe eaten, such as marijua.
What is a drug in pharmacy?
In pharmacology, a drug is a chemical substance, typically of known structure, which, when administered to a living organism, produces a biological effect. A pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose a disease or to promote well-being.
Why nanoparticles are used in drug delivery?
Due to their small size and large surface area,drug nanoparticles show increase solubility and thus enhanced bioavailability, additional ability to cross the blood brain barrier (BBB), enter the pulmonary system and be absorbed through the tight junctions of endothelial cells of the skin.
What are the disadvantages of oral route?
Although solid-dose forms such as tablets and capsules have a high degree of drug stability and provide accurate dosage, the oral route is problematic because of the unpredictable nature of gastrointestinal absorption.
What are the advantages of intramuscular injection?
Intramuscular injections have otheradvantages too. The muscles have a plentiful supply of blood, which helps ensure that the body absorbs the medication quickly. The tissue in the muscles can also hold more medication than fatty tissue. Doctors administer most injectable vaccines into the muscles.
What happens if you give an IM injection in a blood vessel?.....
The most common complication of a subcutaneous injection is pain near the injection site for 1 to 2 days afterward. ... Injecting medication into a blood vessel: A person may have hit a blood vessel if there is blood in the syringe. Injecting medication into a blood vessel can change the way the drug is absorbed.
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