The therapeutic index reflects a ratio of a drug's a toxic dose-effect curve value relative to a therapeutic dose-effect curve value.

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The therapeutic index is indeed a ratio of a drug's toxic dose-effect curve value relative to a therapeutic dose-effect curve value. It is used to determine the safety of a medication by comparing the amount that is needed to achieve a therapeutic effect to the amount that could cause toxic effects.

The Therapeutic Index Reflects a Ratio of a Drug's a Toxic