Aspadol is a medication that contains tapentadol as its active ingredient and is used for the management of moderate to severe pain. Tapentadol belongs to a class of medications known as centrally acting analgesics. It works through a dual mechanism of action that helps reduce the perception of pain in the body. First, it binds to opioid receptors in the brain and spinal cord, which helps block pain signals. Second, it inhibits the reuptake of norepinephrine, a neurotransmitter that plays a role in regulating pain signals in the nervous system.