The correct answer is option 1. A-IV, B-I, C-II, D-III.
Let us delve into more detail about each drug and its class:
A. Ranitidine:
Class: Antacid
Ranitidine is actually an antacid. Ranitidine belongs to the class of drugs known as histamine-2 (H2) receptor antagonists. It inhibits the action of histamine on the stomach cells, thereby reducing stomach acid production. It is commonly used to treat conditions such as gastroesophageal reflux disease (GERD) and peptic ulcers.
B. Valium (Diazepam):
Class: Benzodiazepine, Tranquilizer
Valium is a brand name for diazepam, which is a benzodiazepine. It acts as a central nervous system depressant and is commonly used as an anxiolytic (anxiety-relieving), sedative, muscle relaxant, and anticonvulsant. It enhances the effect of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain.
C. Codeine:
Class: Narcotic Analgesic (Opioid)
Codeine is an opioid analgesic derived from morphine. It is used for pain relief and as a cough suppressant. It works by binding to opioid receptors in the brain, spinal cord, and other areas of the body, reducing the perception of pain.
D. Chloramphenicol:
Class: Antibiotic
Chloramphenicol is an antibiotic that inhibits bacterial protein synthesis. It is used to treat various bacterial infections, including respiratory tract infections, meningitis, and certain eye infections. Due to its potential for serious side effects, it is reserved for situations where safer antibiotics are not effective.
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