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It's estimated that there are some 40,000 Internet web sites that sell prescription medications -- and the majority claim to be Canadian -- but CBS chief investigative correspondent Armen Keteyian reports that the buyer should beware.

Phony vials of the life saving cancer drug Avastin have turned up in as many as 19 medical clinics in the U.S. CBS News chief investigative correspondent Armen Keteyian speaks with the man responsible for the shipments who feels he has broken no laws

CBS News' Armen Keteyian talks to Tom Haughton, the man responsible for bringing counterfeit cancer drug into America

The FDA has warned some medical practices that they may have been provided with fake cancer drugs.

CBS News' Armen Keteyian traces counterfeit vials of the cancer drug from Turkey and Egypt through several European countries to U.S. shelves

The FDA is warning doctors about purchasing and prescribing a fake Avastin - a cancer-treating drug. CBS News chief investigative correspondent Armen Keteyian follows the trail of where the counterfeit drugs.

The FDA is warning doctors about purchasing and prescribing a fake Avastin - a cancer-treating drug. CBS News chief investigative correspondent Armen Keteyian follows the trail of where the counterfeit drugs.

On top of the critical shortage of potentially life saving drugs in America, terminally ill patients are up against drug companies dealing on the gray market and exploiting the short supply. Armen Keteyian reports.

In 2009, prescription drug abuse killed more people than automobile accidents. As Armen Keteyian reports, a big part of the problem is found in the pharmacies that distribute the powerful medications no questions asked.

CBS News Travel Editor Peter Greenberg talks to Armen Keteyian about Operation Dry Water, a program that aims to remind boaters that operating a boat while intoxicated is illegal and can lead to dangerous accidents.

Jeff Benedict, author of "Poisoned" speaks to Armen Keteyian about food regulation in the U.S. and tips to stay safe on this holiday weekend.

The recent e coli outbreak in Europe has prompted a renewed focus on the safety of food in the U.S. With next year's proposed budget cuts for regulators, Armen Keteyian reports on the status of food safety.

Nursing homes allegedly prescribed anti-psychotic drugs, including Zyprexa and Risperdal, for people who don't need them, with fatal side effects. Armen Keteyian reports.

CBS News correspondent Armen Keteyian reports on the problems caused by lack of sleep. Then, Erica Hill talks to Dr. Jennifer Ashton and Adam Bryant, author of "The Corner Office," about the conflicts between healthy sleep and a successful career.