Several pharmacologically active alkaloids have been detected in the plants.

Given this, it is quite possible that the plant was pharmacologically active in the prevention or termination of pregnancy.

A decision to add a pharmacologically active nutrient to the food supply is very weighty.

The two main metabolites have been shown to be pharmacologically active, but less than the original drug.

This is the oldest documentation of cannabis as a pharmacologically active agent.

Although many medicinal herbs have pharmacologically active components, the focus of alternative medicine is not to isolate and test those ingredients.

As heroin is not pharmacologically active it must first be metabolized.

Assays have found that Ophiocordyceps species produce many pharmacologically active substances.

Many species produce metabolites that are major sources of pharmacologically active drugs.

However, the rule does not predict if a compound is pharmacologically active.