The choice of chemotherapy drug dosage is determined based on the patient`s specific situation, including factors such as the stage of gastric cancer, the patient`s overall health status, and the patient`s tolerance to drugs. Generally speaking, the standard for a low dosage of chemotherapy drugs is to be able to control the progression of the disease while minimizing side effects. The doctor will develop an individualized chemotherapy plan based on the patient`s specific situation and monitor the patient`s physical response and drug tolerance. Commonly used methods for evaluating whether the dosage of chemotherapy drugs is heavy include: assessing the patient`s overall health status, monitoring laboratory indicators, observing physical reactions, etc. If the patient experiences side effects or physical discomfort during chemotherapy, the patient should report it to the doctor in a timely manner. The doctor will adjust the dosage or switch to other drugs based on individual conditions to achieve the best treatment effect and reduce adverse reactions.