Consumers continue to buy potentially risky drugs over the Internet, FDA says.

FDA continues to warn U.S. citizens about the dangers of buying medications over the Internet and is now noting that generic drugs exist for many of the medications Americans are trying to buy in Canada.

New data collected by FDA show that consumers who are trying to save money on prescription drugs don't need to take chances by buying prescription drugs from foreign Internet sites, because low-cost generic versions are available in the United States. This finding also may be an indication that some consumers are likely buying foreign drugs this way to avoid getting a prescription from their doctor or health care professional, since many Web sites do not require a prescription.

The use of prescription drugs without a prescription is an intrinsically unsafe practice. FDA urges consumers to have a prescription from their doctor or other health care professional before using prescription drugs. The agency also urges consumers to review http://www.fda.gov/cder/consumerinfo/buy_outside_ US_text.htm for important information before making such purchases.

Consumers should be aware of safety concerns of drugs purchased from unregulated Internet sellers since some of these drugs might:

* require careful dosing and monitoring;

* not have adequate labeling for safe use;

* be inappropriately packaged, therefore product integrity is uncertain;

* have been withdrawn from the U.S. market for safety or efficacy reasons;

* may carry risks that require initial screening and/or periodic patient monitoring;

* cause harm--such as a controlled substance (narcotic), whose use should be supervised by a doctor or health care professional due to abuse potential; and

* have clinically significant drug-drug interactions.

Recent examinations of a sample of drugs shipped to U.S. consumers found several drugs are associated with higher risks and are more dangerous to the consumer if used without the supervision of a doctor or health care professional. For example, warfarin requires very close monitoring to prevent stroke or death. Amoxicillin and other antibiotics should not be used for self-treatment to reduce the risk of antibiotic-resistant infections. Levothyroxine, a thyroid replacement hormone, also requires close monitoring to ensure effective treatment. Another blood thinner, clopidogrel, may pose increased risk of cardiac events such as heart attack if used in sub-optimal doses, which might be found in imported tablets.

Consumers are also at risk if the drugs are not properly labeled for safe and effective use. For example, alendronate sodium, which is used to treat and prevent osteoporosis, should include information warning patients of significant side effects if it is not taken appropriately. Imported eye drop preparations may not have been manufactured under proper conditions to ensure sterility, leaving patients susceptible to contamination that may result in serious infections. These are only a few examples demonstrating the importance of obtaining FDA-approved drugs and health care provider monitoring.

The examination of foreign mail shipments also found that about 45 percent of the imported products already are available in the United States as an FDA-approved generic drug (see Table 1). About half of these generic drugs are available through national pharmacy chain programs that offer generic prescriptions at a cost of $4 each. This cost is usually significantly less than the cost of drugs charged by Internet sellers.

FDA has documented problems with imported drug products and has taken action when possible against foreign Web sites selling counterfeit products.