Download Research On Antibiotics

Research On
Antibiotics
Made By Ali Imran
8-s
What Are Antibiotics?
• Antibiotics are medicines used to treat
infections or diseases caused
by bacteria (e.g. respiratory tract
infections such as pneumonia and whooping
cough). Antibiotics have saved millions of lives
since they were first introduced in the 1940s
and 1950s. However, because they have been
overused, many antibiotics are no longer
effective against the bacteria they once killed.
How Antibiotics Work?
• Antibiotics work by blocking vital processes in bacteria,
killing the bacteria, or stopping them from multiplying. This
helps the body's natural immune system to fight the
bacterial infection.
• Antibiotics differ in the types of bacteria they work against.
• Antibiotics that affect a wide range of bacteria are
called broad spectrum
antibiotics (e.g.amoxycillin and gentamicin).
• Antibiotics that affect only a few types of bacteria are
called narrow spectrum antibiotics (e.g.penicillin).
• Different types of antibiotics work in different ways. For
example, penicillin destroys bacterial cell walls, while other
antibiotics can affect the way the bacterial cell works.
Types Of Antibiotics?
• Penicillins such as penicillin and amoxicillin.
• Cephalosporins such as cephalexin (Keflex)
• Macrolides such as erythromycin (E-Mycin),
clarithromycin (Biaxin), and azithromycin (Zithromax)
• Fluoroquinolones such as ciprofolxacin (Cipro),
levofloxacin (Levaquin), and ofloxacin (Floxin)