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 a narcotic-like pain reliever. Tramadol is used to treat moderate to severe pain. The extended-release form of tramadol is for around-the-clock treatment of pain. This form of tramadol is not for use on an as-needed basis for pain.