However, early efforts to isolate an active alkaloid were unsuccessful.

Rather, the prepared opium is indirectly heated to temperatures at which the active alkaloids, chiefly morphine, are vaporized.

Several pharmacologically active alkaloids have been detected in the plants.

Alcohol can be used to extract the active alkaloids, and it also boosts the sedative effects.

It's only recently has been where everybody became aware of a lot of the active alkaloids in it.

The active alkaloids are atropine, scopolamine, and hyoscyamine.

Permeability characteristics of piperine on oral absorption-an active alkaloid from peppers and a bioavailability enhancer.

The active alkaloids, pseudoephedrine and ephedrine, are chemically extracted from the plant material and processed for pharmaceutical purposes.

Ibogaine, the active alkaloid, is also used to treat substance abuse disorders.

The unrefined yohimbe bark contains several active alkaloids besides yohimbine.