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.
Tramadol is used to relieve moderate to moderately severe pain. Tramadol extended-release tablets and capsules are only used by people who are expected to need medication to relieve pain around-the-clock . Tramadol is in a class of medications called opiate (narcotic) analgesics. It works by changing the way the brain and nervous system respond to pain.