Simvastatin and aspirin can be taken together under the guidance of a doctor if the indications for both drugs are met and there are no contraindications such as drug allergies. 1. Simvastatin is a lipid-lowering drug, which can be used for the treatment of hypercholesterolemia and also for the secondary prevention of coronary heart disease. Aspirin is an antipyretic and analgesic, as well as a non-steroidal anti-inflammatory drug and an anti-platelet aggregating drug, which has the effect of relieving pain and inhibiting thrombosis. Simvastatin is generally well tolerated; some patients may experience abdominal pain, malaise, and flatulence; most side effects are mild and transient. In a few cases, adverse reactions such as memory loss and confusion may also occur, which are usually reversible and can be recovered after stopping the drug. 2. Common adverse reactions to aspirin include nausea, vomiting, epigastric pain, etc. Taking aspirin for a long period of time or in large doses can lead to gastrointestinal bleeding. In addition, aspirin can also cause measles, angioneurotic edema or shock. 3. Simvastatin and aspirin generally do not have contraindications to the drug, can be used together, will not produce toxic and harmful substances. However, these two drugs should be used together before consulting a doctor in advance, so as not to produce drug interactions, causing damage to the body. The medication needs to pay attention to what, not blindly use their own medication.