Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
Explanation: What is an active ingredient of a drug?
A. The ingredient that produces the desired effect.
The active ingredient is the ingredient of a product that actually does what the product is designed to do. The remaining ingredients may be inert.
... Yale team found that feverfew's active ingredient--parthenolide--specifically binds
to and ... has been identified as a drug target only within the last ...