Details: Anacin contains two important ingredients: aspirin and caffeine, to deliver fast headache relief. Many people find relief from headaches by taking pain relieving medicines known as analgesics. Anacin is an analgesic that combines aspirin with caffeine to deliver fast headache relief. Caffeine complements and enhances aspirin s pain relieving action. Together, aspirin and caffeine work to deliver fast pain relief when you need it most. Trusted safe and effective. That’s the Anacin Advantage.