Pharmacology

Step 1: Understanding the drugs and their indications.
These drugs are used for various conditions, including pain management, spasticity, and depression. Each drug has specific indications based on its mechanism of action.
Step 2: Analyzing each drug and its indication.
- (A) Baclofen: This is a muscle relaxant used to treat spasticity.
- (B) Diclofenac: This nonsteroidal anti-inflammatory drug (NSAID) is used for inflammatory pain relief.
- (C) Gabapentin: It is used for central or peripheral neurogenic pain.
- (D) Amitryptiline: It is an antidepressant used to treat depression.
Step 3: Conclusion.
The correct matching is: (A) - (I), (B) - (II), (C) - (III), (D) - (IV).

Step 1: What is a prodrug?
A prodrug is an inactive compound that is metabolized in the body to produce an active drug.
This allows for improved absorption, bioavailability, or targeted delivery.
Step 2: Analyzing the options.
- (1) Active drug: Incorrect. Active drugs do not require metabolism to become active.
- (2) Biotransformed drug: This refers to a drug that has already undergone metabolic transformation, but is not necessarily inactive.
- (3) Prodrug: Correct. A prodrug is inactive until metabolized in the body.
- (4) Metabolite drug: Incorrect. This term refers to the products of drug metabolism, not the original drug.
Step 3: Conclusion.
Therefore, the correct answer is (3) Prodrug.

Step 1: Matching pharmacological terms with their definitions.
- (A) Pharmacokinetics: It deals with the absorption, distribution, metabolism, and excretion of drugs, so it matches with (II).
- (B) Pharmacogenetics: It studies how genetic factors influence drug response, so it matches with (III).
- (C) Pharmacodynamics: This deals with the effects of drugs on the body, so it matches with (IV).
- (D) Biopharmaceutics: This relates to the drug formulation and delivery, so it matches with (I).
Step 2: Conclusion.
Therefore, the correct matching is (A) - (I), (B) - (III), (C) - (IV), (D) - (II).

Step 1: Matching drugs with their routes of administration.
In this case, the drugs listed are commonly administered via specific routes based on their properties and therapeutic purposes.
- (A) Dopamine: Dopamine is generally administered intravenously (IV) for critical care to raise blood pressure or improve heart function, so it matches with (II).
- (B) Nitroglycerine: Nitroglycerine is used for relieving chest pain (angina) and is often given sublingually (under the tongue) for rapid absorption, so it matches with (IV).
- (C) BCG vaccine: The BCG vaccine is administered via subcutaneous (SC) injection to protect against tuberculosis, so it matches with (III).
- (D) Insulin: Insulin is primarily given subcutaneously for managing blood sugar levels in diabetes, so it matches with (I).
Step 2: Conclusion.
Thus, the correct matching is (A) - (IV), (B) - (II), (C) - (III), (D) - (I). This matches each drug to its appropriate route of administration.