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About ASPIRIN®

One name for your different types of pain. ASPIRIN®.

Bayer's experience in pain relief spans more than 100 years of developing ASPIRIN® products. In fact, no other medication has a pain relief heritage like ASPIRIN®. Trust your pain to ASPIRIN®. Millions have.

A proud tradition of pain relief

For thousands of years, willow bark and leaves have been used to relieve pain and fever. This remedy contained salicin, a naturally occurring anti-inflammatory substance. Then, more than 100 years ago, a chemist experimenting with salicin first made acetylsalicylic acid, often called ASA, the active medication in ASPIRIN®.

Effective new medication becomes best seller

Bayer developed ASPIRIN® and began marketing this effective pain reliever over a hundred years ago. ASPIRIN® soon became the best selling medication in the world. As doctors developed experience prescribing ASPIRIN®, it was made available to be used without a prescription. Patients could now obtain effective pain relief without making a trip to the doctor.

Anti-inflammatory mechanism explains effectiveness

It wasn't until the 1970s, however, that researchers first discovered how ASPIRIN® relieved pain so effectively. They learned that ASPIRIN® inhibited prostaglandins, substances involved in the pain response. This anti-inflammatory action helps to make ASPIRIN® so effective in relieving headache, back pain, muscle aches and joint pain, and also in relieving pain and fever due to cold and flu.