Definition of ecology for English Language Learners. : 1  a science that deals with the relationships between groups of living things and their environments. : 2  the relationships between a group of living things and their environment.
Tramadol (marketed as Ultram, and as generics) is an opioid pain medication used to treat moderate to moderately severe pain. When taken as an immediate-release oral formulation, the onset of pain relief usually occurs within about an hour.It has two different mechanisms. First, it binds to the Î¼-opioid receptor.ramadol is marketed as a racemic mixture of both R-and S-stereoisomers. This is because the two isomers complement each other's analgesic activity. It is often combined with paracetamol (acetaminophen) as this is known to improve the efficacy of tramadol in relieving pain.
This medication is used to help relieve moderate to moderately severe pain. Tramadol is similar to opioid (narcotic) analgesics. It works in the brain to change how your body feels and responds to pain. Take this medication by mouth as directed by your doctor, usually every 4 to 6 hours as needed for pain relief.