Vanishing twin. A vanishing twin, also known as fetal resorption, is a fetus in a multi-gestation pregnancy which dies in utero and is then partially or completely reabsorbed by the twin.
GENERIC NAME: oxycodone. BRAND NAMES: OxyContin, Roxicodone, Oxecta. Oxycodone is prescribed for the management of pain severe enough to require daily, around-the-clock, long-term treatment with a narcotic, and for which alternative treatment options are inadequate for the relief of moderate to severe pain.
OxyContin, manufactured by Purdue Pharma, is a controlled-release formulation of oxycodone effective for 12 hours of pain management. Instant-release formulations, such as Percocet and Tylox, are effective for only 4-6 hours, which results in four to six doses per day.