Medicinal plants are abundant in the Philippines and can be easily cultivated. They grow in mountains, forests, backyards, and farms. Many plants have medicinal properties and can be used to treat illnesses in a cost-effective manner. The document provides guidelines for properly harvesting, storing, and using medicinal plants. It also lists several common plants used to treat ailments like cough, fever, gas, pain, and diabetes and includes instructions for preparing decoctions and other remedies from these plants.