Travelers to countries with malaria should take preventive drugs.

Virtually all those infected are doomed, and the only optimism we can offer is there might be a preventive drug in 10 or 20 years.

No one knows how high an individual's CD-4 count would need to rise to make it practical to stop preventive drugs.

You have other health conditions that do not allow you to take preventive drugs.

You cannot tolerate side effects of preventive drugs.

More studies are looking at taking preventive drugs during that brief window.

Elwood began a large-scale trial of aspirin as a preventive drug for heart attacks.

But at the same time, others note, preventive drugs have cut down on hospitalizations.

It is not intended to be a preventive drug.

The concept of providing a preventive drug before exposure to an infectious agent is not new.