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Main Authors: Xiong, Betty, Fisher, Jillian, Newman, Benjamin, Hu, Meng, Gupta, Shivangi, Choi, Yejin, Fang, Lanyan, Altman, Russ B
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2603.19539
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author Xiong, Betty
Fisher, Jillian
Newman, Benjamin
Hu, Meng
Gupta, Shivangi
Choi, Yejin
Fang, Lanyan
Altman, Russ B
author_facet Xiong, Betty
Fisher, Jillian
Newman, Benjamin
Hu, Meng
Gupta, Shivangi
Choi, Yejin
Fang, Lanyan
Altman, Russ B
contents We introduce an expert curated, real-world benchmark for evaluating document-grounded question-answering (QA) motivated by generic drug assessment, using the U.S. Food and Drug Administration (FDA) drug label documents. Drug labels contain rich but heterogeneous clinical and regulatory information, making accurate question answering difficult for current language models. In collaboration with FDA regulatory assessors, we introduce FDARxBench, and construct a multi-stage pipeline for generating high-quality, expert curated, QA examples spanning factual, multi-hop, and refusal tasks, and design evaluation protocols to assess both open-book and closed-book reasoning. Experiments across proprietary and open-weight models reveal substantial gaps in factual grounding, long-context retrieval, and safe refusal behavior. While motivated by FDA generic drug assessment needs, this benchmark also provides a substantial foundation for challenging regulatory-grade evaluation of label comprehension. The benchmark is designed to support evaluation of LLM behavior on drug-label questions.
format Preprint
id arxiv_https___arxiv_org_abs_2603_19539
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle FDARxBench: Benchmarking Regulatory and Clinical Reasoning on FDA Generic Drug Assessment
Xiong, Betty
Fisher, Jillian
Newman, Benjamin
Hu, Meng
Gupta, Shivangi
Choi, Yejin
Fang, Lanyan
Altman, Russ B
Computation and Language
Artificial Intelligence
We introduce an expert curated, real-world benchmark for evaluating document-grounded question-answering (QA) motivated by generic drug assessment, using the U.S. Food and Drug Administration (FDA) drug label documents. Drug labels contain rich but heterogeneous clinical and regulatory information, making accurate question answering difficult for current language models. In collaboration with FDA regulatory assessors, we introduce FDARxBench, and construct a multi-stage pipeline for generating high-quality, expert curated, QA examples spanning factual, multi-hop, and refusal tasks, and design evaluation protocols to assess both open-book and closed-book reasoning. Experiments across proprietary and open-weight models reveal substantial gaps in factual grounding, long-context retrieval, and safe refusal behavior. While motivated by FDA generic drug assessment needs, this benchmark also provides a substantial foundation for challenging regulatory-grade evaluation of label comprehension. The benchmark is designed to support evaluation of LLM behavior on drug-label questions.
title FDARxBench: Benchmarking Regulatory and Clinical Reasoning on FDA Generic Drug Assessment
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2603.19539