the chemically active part of a chemical compound
I take a triptan called Treximet, which also includes a dose of the painkiller naproxen, the active ingredient in Aleve.
The National Institute on Drug Abuse reports the prevalence of MDMA (the active ingredient in Molly) is 12.9% in youth age 18-25.
In 2008, the drug heparin was tied to dozens of deaths after most of the active ingredient was swapped with a counterfeit.
The active ingredient is Benzyl Nicotinate (niacinamide), part of the drug group of vasodilators that widen blood vessels.
The active ingredient in the spray tan is dihydroxyacetone (DHA), the same as in over-the-counter bronzers.
We are told that the active ingredient in this compound is Arnica montana, with a basis of soap cerate.
This is sold in tubes or in tablets, and it is the active ingredient of the peptogenic milk powder.
The enzyme, pancreatin, is the active ingredient, and may be prepared from the intestines of the pig.
Strychnine is a powerful poison, and forms the active ingredient of many 'vermin-killers.'
The oeuf coquatri was supposed to be the product of a very old cock and to furnish the most active ingredient of witch ointment.