WASHINGTON (Reuters) - There is no evidence that brand-name drugs given to treat heart and other cardiovascular conditions work any better than their cheaper generic counterparts, U.S. researchers said on Tuesday.
The findings run counter to the perception by some doctors and patients that pricier brand-name drugs are clinically superior, said Dr. Aaron Kesselheim of Brigham and Women's Hospital and Harvard Medical School in Boston, who led the study.
"If a patient is prescribed a generic drug because that's what's appropriate for their condition, then they should feel confident taking that drug. And physicians themselves should also feel confident prescribing generic drugs where appropriate," Kesselheim said in a telephone interview.
He said rising costs of brand-name prescription drugs strain the budgets of patients as well as p ublic and private health insurers. Overall U.S. prescription drug sales hit $286.5 billion in 2007.
Pharmaceutical companies retain exclusive rights to drugs they develop for a certain number of years, after which others can sell generic versions that are chemically equivalent. The active ingredient is the same, but the color and shape may differ and they may have different inert binders and fillers.
In the United States, the Food and Drug Administration must approve a generic version of a drug before it can be sold.
Kesselheim said cardiovascular drugs to treat conditions of the heart and blood vessels are the most commonly prescribed category.
The researchers said brand-name manufacturers have suggested generic drugs may be less effective and less safe. They also found that many editorials in medical journals questioned whether generic drugs were as good.
Generic medications represent 66 percent of the total prescriptions in the United States, but less than 15 percent of the money spent on prescription drugs, according to the Generic Pharmaceutical Association industry group.
Kathleen Jaeger, who heads the pharmaceutical group, said the research reconfirms that FDA-approved generics provide the same medicine with the same clinical effects at a substantial cost savings