Question

How do Antibiotics work?

Answer 1

Antibiotics are antimicrobial substances that are active against bacteria. Antibiotics are the most important type of antibacterial agent for fighting bacterial infections, and they are widely used in the treatment and prevention of such infections. They have the ability to either kill or inhibit the growth of bacteria.

Complete answer:
Antibiotics are medications that are used to treat a wide range of bacterial infections and diseases. Antibiotics have saved millions of lives since their introduction in the 1940s and 1950s. However, many antibiotics are no longer effective against the bacteria they once killed due to overuse.
Antibiotics combat bacterial infections by either killing the bacteria or slowing and suspending its growth. They accomplish this through the following methods:
Attacking the bacterial wall or coating,
Interfering with bacterial reproduction, and
Preventing protein production in bacteria
Antibiotics work by interfering with viral bacterial processes, killing bacteria or preventing them from multiplying. This aids the body's natural immune system in combating the bacterial infection. Antibiotics work differently against different types of bacteria.
Broad spectrum antibiotics are antibiotics that kill a wide variety of bacteria (eg, amoxicillin and gentamicin).
Narrow spectrum antibiotics are antibiotics that only affect a few types of bacteria (eg, penicillin).
Different antibiotics work in different ways. Penicillin, for example, destroys bacterial cell walls, whereas other antibiotics can influence how bacteria cells work.
Antibiotic medications may contain one or more active ingredients and be marketed under a variety of brand names. The active ingredient in a medicine is the chemical that causes it to work. The active ingredient and brand name should be listed on the medication label.
Up to $10\%$ of people taking antibiotics may experience the following common side effects:
gastrointestinal issues such as diarrhoea, nausea, and vomiting thrush infections, which can affect the mouth (white patches will be visible) and, in women, can also occur in the vagina (causing itchiness, pain and discharge).

Note:
Antibiotic resistance occurs when certain antibiotics can no longer control or kill bacteria. This can imply that there are no effective treatments for certain conditions in some cases. Every year, 2 million people are infected with antibiotic-resistant bacteria, resulting in at least 23,000 deaths.The sensitive bacteria are eliminated when you take an antibiotic. Bacteria that survive antibiotic treatment are frequently resistant to that antibiotic. These bacteria frequently have distinct characteristics that make antibiotics ineffective against them.