Over the past five years, Dr. Oz says hospitals that have adopted the "grocery store" system have eliminated dosage errors. "We're not talking about a small little jump here," he says. "We're talking about a dramatic shift."
Mistakes also happen because hospitals are busy places. "There's a lot of things happening at once. People get tired," Dr. Oz says. "They get interrupted all the time."
How can you protect yourself? Dr. Oz says everyone in America must learn to be a smarter patient .