Problem 38 - A Complete Resource Book in Chemistry for JEE Main

Question

Which of the following is an analgesic? (a) streptomycin (b) penicillin (c) chloramphenicol (d) paracetamol

Step-by-Step Solution

Answer

Paracetamol is the analgesic.

Step 1: Understand What an Analgesic Is

An analgesic is a type of medication used to relieve pain without causing loss of consciousness. Analgesics work by blocking the pain signals in the brain or interfering with the brain's interpretation of those signals.

Step 2: Examine Each Option

Look at each option to determine if it is used as an analgesic. 1) Streptomycin is an antibiotic used to treat bacterial infections. 2) Penicillin is another antibiotic for bacterial infections. 3) Chloramphenicol is also an antibiotic. 4) Paracetamol (also known as acetaminophen) is commonly used as a pain reliever and fever reducer.

Step 3: Identify the Analgesic

Based on the examination, paracetamol is the only option that is specifically used as an analgesic. Unlike the others, it is not an antibiotic and is commonly used for treating mild to moderate pain.

Key Concepts

Analgesic medications

Analgesic medications are drugs specifically designed to alleviate pain in the body. They are crucial in managing pain without causing loss of consciousness. Unlike anesthetics, which block all sensation, analgesics target pain pathways in the central nervous system or peripheral nervous systems.
There are different classes of analgesics, including:

• Nonsteroidal anti-inflammatory drugs (NSAIDs), like ibuprofen
• Opioids, such as morphine
• Simple analgesics, like paracetamol

Each type works through distinct mechanisms but generally aims at reducing or blocking the brain's perception of pain.
Choosing the right analgesic depends on the type and intensity of pain, as well as individual patient needs. It's important to use these medications responsibly to avoid potential side effects like gastrointestinal issues or dependence, especially with opioids.

Paracetamol

Paracetamol, also known as acetaminophen, is one of the most common analgesics used worldwide. It is primarily used to relieve mild to moderate pain, such as headaches, muscle aches, and toothaches, and to reduce fever. Paracetamol is considered a safe medication when used correctly. It works by inhibiting the production of prostaglandins in the brain, chemicals that enhance pain and cause inflammation.

• Effective for mild to moderate pain
• Available over-the-counter
• Relatively few side effects when used at correct dosages

However, overdose or prolonged use can lead to severe liver damage, so it's essential to adhere to recommended doses and consult healthcare professionals if pain persists.

Pain relief

Pain relief is a fundamental aspect of medical treatment, aimed at improving the quality of life of individuals experiencing discomfort. The sensation of pain can arise from various causes, including injury, surgery, chronic conditions, or infections. There are several approaches to achieving pain relief:

• Medication, including analgesics like paracetamol and NSAIDs
• Physical therapy and exercise
• Alternative therapies like acupuncture or chiropractic treatments

Each method comes with its considerations. Medications may provide quick relief, whereas physical or alternative therapies may offer long-term benefits without the risk of medication side effects. Pain management is often personalized, and a comprehensive treatment plan may use a combination of these approaches to achieve the best outcome.

Antibiotics vs analgesics

Antibiotics and analgesics serve different purposes in the field of medicine. While both are critical, understanding their differences helps in their appropriate use. Antibiotics are used to treat infections caused by bacteria. They work by killing bacteria or inhibiting their growth. Examples include streptomycin, penicillin, and chloramphenicol.
In contrast:

• Analgesics are used to relieve pain, without affecting the infections or bacteria causing it.
• They do not treat the underlying cause of pain, if linked to bacterial infections.

Choosing between antibiotics and analgesics depends on the clinical diagnosis. While antibiotics require a prescription and are used for specific bacterial infections, analgesics like paracetamol can be bought over the counter for symptomatic relief. Misuse of antibiotics can lead to resistance, making infections harder to treat, while misuse of analgesics can lead to other health issues.