Not Medical Advice: The imprints of "K 18" belong to oxycodone hydrochloride, a white, round pill. Oxycodone is an opioid pain medication and is considered to be in all respects morphine-like and, in spite of the chemical relationship to codeine, closer to morphine than to codeine in its dependence liability.
Oxycodone's behavioral effects can last up to 5 hours. As with most opiates, the adverse effects of oxycodone abuse are dependence and tolerance development. Five mg of oxycodone is equivalent to 30 mg of codeine when administered orally.
In recent news, federal health regulators will require generic versions of OxyContin (an oxycodone hydrochloride brand name) to include recent formulation changes designed to make the pill harder to abuse. OxyContin has long been one of the nation's top-selling prescription painkillers with sales of more than $2.8 billion last year, according to IMS Health. In 2007, Purdue Pharma and three of its executives paid $634 million and plead guilty to charges of misleading the public about the safety and addictiveness of OxyContin.