There are many different pain medications available, and it can be difficult to keep track of how they differ. Most people do not question a prescribed pain medication as long as it adequately controls their symptoms.
However, opioid pain medications carry risks that are important to understand. Without knowing how a medication works, it can be hard to recognize concerning side effects, identify misuse, or understand when a medication may no longer be appropriate.
Two commonly prescribed opioid medications that are also frequently misused are codeine and hydrocodone. While both belong to the opioid drug class, they differ in strength, medical use, and addiction risk. Misuse of either medication can lead to opioid use disorder.
If you have been prescribed either medication or have used them in the past and want to better understand the differences, this guide provides a clear breakdown.
What Are Codeine and Hydrocodone?
Codeine and hydrocodone are both opioid medications, meaning they bind to opioid receptors in the brain to reduce pain and produce calming effects. Despite being in the same drug class, they are used differently and have distinct risk profiles.
Codeine
Codeine is considered a lower-potency opioid. It is commonly prescribed to treat mild to moderate pain and is also used in combination medications to suppress coughing. According to MedlinePlus, codeine is often paired with other medications such as acetaminophen.
Although codeine is weaker than many other opioids, it is still habit-forming. Regular use can lead to dependence, particularly when taken outside of medical guidance or in higher doses.
Hydrocodone
Hydrocodone is a stronger opioid medication used to treat moderate to severe pain. It is commonly prescribed after surgery, injury, or for conditions involving significant pain. Hydrocodone is frequently combined with acetaminophen and sold under brand names such as Vicodin.
Because of its potency, hydrocodone carries a higher risk of misuse, dependence, and overdose. Long-term use is generally discouraged unless carefully monitored by a physician.

Which Is Stronger: Codeine vs. Hydrocodone?
Hydrocodone is significantly stronger than codeine. It produces greater pain relief and, when misused, a more intense euphoric effect. This increased potency is one reason hydrocodone has a higher potential for addiction and overdose.
How Are These Medications Used?
Both medications are prescribed for pain relief, but their applications differ. Codeine may be used for pain or cough suppression, while hydrocodone is reserved for more severe pain that does not respond to milder treatments.
Side Effects and Risks
Even when taken as prescribed, opioid medications can cause side effects. Misuse increases the risk of serious complications.
Common Side Effects of Codeine
- Dizziness or lightheadedness
- Nausea or vomiting
- Constipation
- Sweating
- Drowsiness
- Euphoria
- Confusion
- Shortness of breath
Common Side Effects of Hydrocodone
- Dizziness
- Nausea or vomiting
- Constipation
- Fatigue
- Loss of coordination
- Itching
- Euphoria
- Confusion
- Respiratory depression
In rare cases, both medications can cause allergic reactions, seizures, mood changes, or dangerous breathing suppression. Severe side effects require immediate medical attention.
Can Codeine or Hydrocodone Be Addictive?
Yes. All opioid medications carry a risk of addiction, even when used exactly as prescribed.
Opioids can cause physical dependence by altering how the brain regulates pain and reward. Over time, the body adapts to the presence of the drug, leading to withdrawal symptoms when use stops.
Psychological dependence can also develop when opioids are used to cope with stress or emotional discomfort in addition to physical pain.

Signs of Opioid Addiction
Addiction does not look the same for everyone, but common warning signs include:
- Taking higher doses than prescribed
- Using medication when not in pain
- Cravings or preoccupation with medication
- Doctor shopping or obtaining pills illegally
- Declining performance at work or school
- Strained relationships
- Concealing medication use
- Financial problems related to drug use
Getting Help for Opioid Misuse
If you are concerned about opioid use, speaking with a healthcare provider is an important first step. Treatment options vary depending on severity, health history, and support needs.
Structured treatment programs may include medically supervised withdrawal support followed by ongoing therapy and relapse prevention planning.
If you are unsure what level of care may be appropriate, you can contact our team to discuss options confidentially.
Sources
- MedlinePlus. Codeine Drug Information. U.S. National Library of Medicine. https://medlineplus.gov/druginfo/meds/a682065.html
- MedlinePlus. Hydrocodone Drug Information. U.S. National Library of Medicine. https://medlineplus.gov/druginfo/meds/a614045.html
- National Institute on Drug Abuse. Prescription Opioids. https://nida.nih.gov/research-topics/prescription-opioids
- CDC. Understanding the Opioid Overdose Epidemic. https://www.cdc.gov/overdose/epidemic/index.html




