I have a feeling the symptoms have to do with a problem with our immune systems, in which our bodies produce extra antibodies and white blood cells to act like our body needs to fight off some sickness when we really don't have have one.
Oxycodone is a generic chemical opioid and is the active ingredient in OxyContin. And OxyContin is a brand name drug that contains oxycodone. The addictiveness of OxyContin and oxycodone are generally the same.
Percocet (oxycodone) is stronger than Vicodin (hydrocodone). Percocet is typical prescribed in 5mg doses. Hydrocodone is also typically prescribed in 5mg doses. At these levels percocet is definitly the stronger drug.