Step 1: Understanding the Concept:
The question describes two drugs that give patients the same clinical effect and the same safety profile, and asks what term fits this relationship.
Step 2: Key Concept or Approach:
The key is to separate terms that describe a single drug's own concentration limits from a term that compares two different drugs against each other.
Step 3: Detailed Explanation:
Minimum Toxic Concentration marks the point where one drug turns harmful, a single-drug threshold.
Minimum Effective Concentration marks the point where one drug starts working, also a single-drug threshold.
Therapeutic window is the safe dosing range between those two thresholds for one drug.
None of these three describe a comparison between two separate drug products. Therapeutic equivalent is the term used specifically when two different drug products match each other in both how well they work and how safe they are for patients, exactly the relationship described in the question.
Step 4: Final Answer:
Therapeutic equivalent is the correct term.