<human>: What are the most common side effects of taking aspirin?
<bot>: The most common side effects of taking aspirin include stomach irritation, nausea, vomiting, dizziness, headache, and rash. Other less common but more serious side effects may include allergic reactions, bleeding problems, and increased risk of heart attack or stroke. Aspirin should be taken with caution if you have certain medical conditions such as asthma, allergies, high blood pressure, diabetes, or kidney disease. It is important to consult your doctor before taking aspirin for long-term use.