{{more citations needed|date=March 2023}}
An '''active ingredient''' is any [[ingredient]] that provides [[biological activity|biologically active]] or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease or to affect the structure or any function of the body of humans or animals.<ref>{{Cite journal |author=Center for Drug Evaluation and Research |accessdate=2022-02-03 |title=Drugs@FDA Glossary of Terms |url=https://www.fda.gov/drugs/drug-approvals-and-databases/drugsfda-glossary-terms |journal=FDA |language=en |date=2017-11-14 }}</ref>
{{more citations needed|date=March 2023}}
An '''active ingredient''' is any [[ingredient]] that provides [[biological activity|biologically active]] or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease or to affect the structure or any function of the body of humans or animals.<ref>{{Cite journal |author=Center for Drug Evaluation and Research |accessdate=2022-02-03 |title=Drugs@FDA Glossary of Terms |url=https://www.fda.gov/drugs/drug-approvals-and-databases/drugsfda-glossary-terms |journal=FDA |language=en |date=2017-11-14 }}</ref>