This information is for educational purposes only. It is not intended as medical advice. Always consult a qualified healthcare professional.
OTC
Oxymorphone hydrochloride
INN: Oxymorphone hydrochloride
Data updated: 2026-04-11
Available in:
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About This Product
ATC Code
N02AA11
Source
User Reviews
Reviews reflect personal experiences and are not medical advice. Always consult your doctor.
KEGG
USDailyMed:Oxymorphone
N02AA11(WHO)
AU:S8(Controlled drug)BR:Class A1(Narcotic drugs)CA:Schedule IDE:Anlage II(Authorized trade only, not prescriptible)UK:Class AUS:Schedule II
4,5α-Epoxy-3,14-dihydroxy-17-methylmorphinan-6-one
76-41-5Y
5284604
7094
DB01192Y
4447650Y
9VXA968E0C
D08323Y
ChEMBL963Y
DTXSID5023409
Interactive image
CN1CC[C@]23c4c5ccc(O)c4O[C@H]2C(=O)CC[C@@]3(O)[C@H]1C5
InChI=1S/C17H19NO4/c1-18-7-6-16-13-9-2-3-10(19)14(13)22-15(16)11(20)4-5-17(16,21)12(18)8-9/h2-3,12,15,19,21H,4-8H2,1H3/t12-,15+,16+,17-/m1/s1YKey:UQCNKQCJZOAFTQ-ISWURRPUSA-NY
Oxymorphone(sold under the brand namesNumorphanandOpanaamong others) is a highly potentopioidanalgesicindicated for treatment of severe pain. Pain relief after injection begins after about 5–10 minutes; after oral administration it begins after about 30 minutes and lasts about 3–4 hours for immediate-release tablets and 12 hours for extended-release tablets.The elimination half-life of oxymorphone is much faster intravenously, and as such, the drug is most commonly used orally.Likeoxycodone, which metabolizes to oxymorphone, oxymorphone has a high abuse potential.
Oxymorphone was developed in Germany in 1914. It was patented in 1955 and approved for medical use in 1959.In June 2017 theFDAaskedEndo Pharmaceuticalsto remove its product from the US market.This was in part due to theopioid epidemicin the US, and the fact that a 2012 reformulation failed to stop illicit injection of the drug. Endo responded by voluntarily removing Opana ER from the market a month later.Generic versions of extended-release oxymorphone, such as those manufactured byAmneal Pharmaceuticals, are still available in the US.
⚠️ Warnings
• Caution should be exercised in patients with history of head injury, increased intracranial pressure (pressure within the skull), low blood pressure, liver and kidney impairment, thyroid or adrenal gland disorder, gastrointestinal problem, children, during pregnancy and breastfeeding.
• In elderly person it may cause respiratory and central nervous system depression, if it so stop the medication immediately.
• It may cause dizziness, do not drive a car or operate machinery while taking this medication.