Well, understanding how rocks are changed by heat, pressure, and chemical solutions can help us in understanding the variety of metamorphic rocks which we actually observe on the Earth's surface.
Noscapine is a benzylisoquinoline alkaloid produced in opium poppy (Papaver somniferum) and other members of the Papaveraceae. It has been used as a cough suppressant and more recently was shown to possess anticancer activity.
IV Benadryl + IV narcotic (hydromorphone, morphine, fentanyl etc) apparently gives more of a rush than either alone. It's not so much potentiation or an effect on metabolism as it is a synergy of each medications effects. Akin to combining etoh and weed or any two drugs ...