Advantages of using medicinal plants for the treatment of cancer. Synthetic drugs are manufactured in the factory using different chemicals, even though these drugs can cause side effects that are a danger to the patient. From this concept, various scientists have investigated a natural way of preparing drugs to treat cancer, and plants have become the main source due to their natural and non-harmful chemicals (phytochemicals), fewer side effects, easy accessibility, cost-effectiveness, and because chemicals can be obtained from one plant that have various functions such as antioxidant, antimicrobial, anticancer, etc.