PlainMeds provides educational information only. This is not medical advice. Always consult your doctor or pharmacist.

hydromorphone vs oxycodone

Side-by-side comparison of hydromorphone and oxycodone Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

Drug Class
hydromorphone Opioid Analgesic
oxycodone Opioid Analgesic
Type
hydromorphone Prescription
oxycodone Prescription
Summary
hydromorphone

Hydromorphone (Dilaudid) is a strong pain medicine. It is used to treat severe pain when other pain medicines do not work well enough.

oxycodone

Oxycodone is a strong pain medicine. It is used to treat severe pain that is not helped by other treatments.

What It Treats
hydromorphone

This medicine treats severe pain that requires an opioid pain medicine. It is for use when other treatments are not adequate. Do not use it for long periods unless your pain stays severe and other options are still not adequate. This medicine carries risks of addiction, abuse, and misuse.

oxycodone

Oxycodone is used to manage severe pain. It is for pain that requires an opioid medicine. You should only use it when other pain treatments are not enough. Talk to your doctor about other options if possible.

How It Works
hydromorphone

Hydromorphone works by binding to receptors in the brain and spinal cord. This blocks pain signals from reaching the brain. This results in a decreased feeling of pain.

oxycodone

Oxycodone works by changing how your brain and nervous system respond to pain. It attaches to certain receptors in the brain. This helps to block pain signals and reduce pain.

Common Side Effects
hydromorphone
  • Lightheadedness
  • Dizziness
  • Sleepiness
  • Nausea
  • Vomiting
oxycodone
  • Feeling sick to your stomach
  • Constipation
  • Throwing up
  • Headache
  • Itching
FAERS Reports
hydromorphone
  • Addiction to the drug 35,077
  • Taking too much of the drug 22,994
  • Pain 22,132
  • Emotional upset 17,685
  • Death 14,869
oxycodone
  • Addiction to the drug 27,480
  • Pain 26,410
  • Death 19,598
  • Taking too much of the drug 19,081
  • Harmful effects from different substances 16,254
Serious Warnings
hydromorphone

This medicine has a boxed warning. It can cause serious and life-threatening risks. Taking too much can cause overdose and death. It can cause addiction, abuse, and misuse. It can also cause very slow or stopped breathing. Accidental intake, especially by a child, can cause a fatal overdose. Taking with alcohol or other depressants can cause coma and death. If you are pregnant, long-term use can cause withdrawal symptoms in the newborn.

oxycodone

Oxycodone can cause serious, life-threatening risks: * Addiction, abuse, and misuse can lead to overdose and death. Your doctor will check your risk before prescribing and during treatment. * It can cause very slow or stopped breathing, especially when you start taking it or after a dose increase. * If a child accidentally takes even one dose, it can cause a fatal overdose. * Taking it with benzodiazepines (like Xanax) or other depressants (like alcohol) can cause sleepiness, slowed breathing, coma, and death. * Using oxycodone for a long time during pregnancy can cause withdrawal symptoms in the newborn. * Taking oxycodone with certain other medicines can cause dangerous side effects.

Pregnancy
hydromorphone

Using this medicine for a long time during pregnancy can cause withdrawal symptoms in the baby after birth. Talk to your doctor if you are pregnant or plan to become pregnant. This medicine may not be recommended during labor.

oxycodone

Using oxycodone for a long time during pregnancy can cause withdrawal symptoms in the baby after birth. Talk to your doctor about the risks if you are pregnant or plan to become pregnant. Oxycodone is not recommended during labor, as it can cause breathing problems in the newborn.

Also Compare — Nearby Drugs

How to Read This hydromorphone vs oxycodone Comparison

hydromorphone is classified in the Opioid Analgesic drug class, while oxycodone sits within the Opioid Analgesic class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, hydromorphone has 112,757 submissions while oxycodone has 108,823. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between hydromorphone and oxycodone — always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.