Analgesics such as Aspadol 100 mg (Tapentadol) are used to treat moderate to severe pain. It functions by altering the body's response to pain. The primary ingredient in Aspadol, tapentadol, is known to lessen both pain perception and pain response. The purpose of this medication is to treat severe pain. One such opioid analgesic is that it works on specific parts of the brain to reduce pain. Diabetes patients with peripheral neuropathy, or soreness in their nerves, can also be treated with it.