If you’re specifically looking for Opana ER (oxymorphone extended-release) online, there isn’t a legitimate “best seller” I can recommend. FDA records show that brand-name Opana ER was withdrawn from marketing, and FDA has warned online sellers for marketing purported Opana ER products without approved applications.
A safer, convenient approach
Contact your prescriber and explain your current pain-treatment needs.
Ask about currently available alternatives rather than relying on an online Opana ER listing.
If oxymorphone is medically appropriate, ask your prescriber or pharmacist about currently authorized formulations and availability.
Use a licensed pharmacy that verifies prescriptions and provides pharmacist support.
Avoid websites advertising “Opana ER” without a prescription, especially those promising immediate or overnight fulfillment. FDA has specifically identified such online listings as involving unapproved products.
Never assume that a website’s product is genuine simply because it displays the Opana or Opana ER name.
For legitimate opioid treatment, follow your prescriber’s directions and don’t change doses or switch products on your own. FDA recommends that extended-release/long-acting opioids be reserved for severe, persistent pain when alternatives are inadequate.