Venetoclax is usually taken for a long period of time and does not have to be taken all the time. The specific use of the drug depends on the condition. Venetoclax is a targeted drug used in the treatment of chronic lymphocytic leukemia, small lymphocytic lymphoma, acute myelogenous leukemia and so on. The specific use of the drug should be based on the condition under the guidance of the physician’s interview, usually need to take a long time to take the drug, because these diseases need to continue to treat, but do not necessarily have to take the drug all the time. Adverse reactions such as hypocalcemia, hyperglycemia, hyperkalemia, hypophosphatemia, diarrhea, nausea, abdominal pain, constipation, vomiting, arthralgia, dyspnea, headache rash, and other adverse reactions can occur with the use of this drug. It is contraindicated in patients who are allergic to Venetoclax; it is not recommended for use during lactation and in pregnant women. Use with caution in allergic individuals. If any discomfort occurs during the administration of Venetoclax, you should actively contact the attending physician, and patients should not use the drug on their own to avoid adverse results.