31.   He pointed to the example of the phen-fen diet drug combination, a combination not officially approved though widely used until it was linked to heart problems.

32.   If you are concerned about nausea, talk with your doctor about the best drug combination for you before you begin treatment.

33.   In other studies, the company found the drug had essentially the same rate of effectiveness as other antibiotics and drug combinations.

34.   In the years since, she has cycled through a series of drugs and drug combinations.

35.   It provides no way to check the many drugs that a patient may be taking, to see whether a drug combination is dangerous.

36.   Jenny Craig said Thursday that it was recommending that doctors at its centers stop prescribing the drug combination while Nutri-System said it is reviewing its position.

37.   Klein now takes a drug combination that does not include a protease inhibitor and hopes to start treatment for hepatitis soon.

38.   Last week Ward saw a patient whose viral level was unchanged after he took a drug combination.

39.   Missed drug doses are one of the causes of resistance, in which the virus mutates into a form not affected by a certain drug or drug combination.

40.   Most experts anticipate a multi-faceted drug combination will eventually overpower the virus in HIV-infected patients and either kill or inactivate it.