Absorption enhancers are a key concept in the study of bioavailability, helping researchers understand how compounds move through biological barriers. This page centers on absorption enhancers as a scientific topic, exploring how these factors are defined, categorized, and evaluated within rigorous research frameworks. By concentrating on the keyword absorption enhancers, we outline how researchers frame their questions, compare different approaches, and interpret results without assuming specific outcomes. In scientific practice, absorption enhancers are examined through measurements of bioavailability using a spectrum of models—from in vitro systems to in vivo studies. Core concepts such as solubility, permeability, and first-pass metabolism are considered to understand the mechanisms by which absorption enhancers may influence the handling of substances. By integrating data across methods and conditions, researchers build a cohesive picture of how absorption enhancers interact with biological processes and what that may imply for subsequent research and development. Researchers categorize absorption enhancers into distinct areas, including solubility modifiers, permeation modulators, and advanced delivery systems that employ carrier technologies. Each category brings its own experimental considerations, hypotheses, and safety and compatibility concerns. Alongside mechanistic work, attention to regulatory and ethical guidelines ensures that data on absorption enhancers are produced and reported with transparency, reproducibility, and accountability. Practical strategies for studying absorption enhancers emphasize strong study design and clear communication of findings. Effective approaches include preregistration of experiments, standardized protocols, validated analytical methods, and cross-method verification to support robust conclusions. A thorough literature review helps identify gaps and benchmarking opportunities, while interdisciplinary collaboration can provide complementary perspectives on how absorption enhancers fit into the broader landscape of bioavailability research. By foregrounding evidence, method rigor, and transparent reporting, researchers can build a solid foundation for evaluating absorption enhancers.