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.
On August 18, 2014, the pain reliever tramadol (UltramÂ®) will be scheduled as a Class IV controlled substance by the U.S. Drug Enforcement Administration.1 Tramadol is a synthetic, opioid pain reliever similar in strength to codeine.In 2012, more than 40 million tramadol prescriptions were written in the United States, more than any other opioid medications except for hydrocodone and oxycodone. 2.In 1994, clinical data suggested tramadol had a very low abuse potential.n the year 2000, tramadol was present in only 82 law enforcement drug seizures. This number increased to 1806 by 2012. 1 A 2002 study found that 87 out of 140 healthcare professionals testing positive for tramadol use obtained the drug with illegal prescriptions.