The trial of quantitative determination of active compound in the selected drugs after their expiration date. "Expired medication" also represents a potentially large source of supply of medicine for different programs. In United States there were several tests which check the stability of drugs products past their expiration date. It turns out that the date on the label, however, is often much earlier than the real expiration date. In this article we are going to present the results of our tests. All tested drugs, which were out of their expiration date, are stable and with full of their potency.