Talbutal is a barbiturate drug that is used for treating insomnia and other sleep disorders. However, the drug may contain impurities that can have adverse effects on human health. The impurities may include by-products of the manufacturing process, degradation products, and other substances that may be introduced during storage or transportation. These impurities can cause side effects such as allergic reactions, respiratory problems, and other health issues. It is important to ensure that Talbutal is manufactured and stored properly to minimize the risk of impurities.