- This medicine is a strong pain drug that can put you at risk for addiction, abuse, and misuse. Misuse or abuse of Trezix (acetaminophen, caffeine, and dihydrocodeine) can lead to overdose and death. Talk with your doctor.
- This medicine has acetaminophen in it. Very bad and sometimes deadly liver problems like the need for a liver transplant have happened with acetaminophen use. Most of the time, liver problems have happened in people taking more than 4,000 milligrams of acetaminophen in a day. Also, people who had liver problems were often using more than 1 drug that had acetaminophen in it. Talk with your doctor.
- This medicine may cause very bad and sometimes deadly breathing problems. Call your doctor right away if you have slow, shallow, or trouble breathing.
- The chance of very bad and sometimes deadly breathing problems may be greater when you first start this medicine or anytime your dose is raised.
- Even one dose of Trezix may be deadly if it is taken by someone else or by accident, especially in children. If this medicine is taken by someone else or by accident, get medical help right away.
- This medicine has an opioid drug in it. The use of opioid drugs along with a benzodiazepine drug or other drugs that may make you drowsy or slow your actions has led to very bad side effects. Side effects that have happened include slowed or trouble breathing and deaths. Benzodiazepine drugs include drugs like alprazolam, diazepam, and lorazepam. Benzodiazepine drugs are used to treat many health problems like anxiety, trouble sleeping, or seizures. Talk with the doctor.
- Many drugs interact with Trezix and can raise the chance of side effects like deadly breathing problems. Talk with your doctor and pharmacist to make sure it is safe to use this medicine with all of your drugs.
- Avoid drinking alcohol or taking products that have alcohol in them while taking Trezix.
- Get medical help right away if you feel very sleepy, very dizzy, or if you pass out. Caregivers or others need to get medical help right away if the patient does not respond, does not answer or react like normal, or will not wake up.
- Using this medicine for a long time during pregnancy may lead to withdrawal in the newborn baby. This can be life-threatening. Talk with the doctor.
- This medicine is not approved for use in children. Do not give to a child younger than 12 years of age. Children between 12 and 18 years of age who are very overweight or have certain other health problems like sleep apnea or other lung or breathing problems must not use this drug. If your child has been given Trezix, ask the doctor for information about the benefits and risks.
- Some children have had very bad and sometimes deadly breathing problems when using codeine after surgery to remove tonsils or adenoids. Do not give to a child younger than 18 years of age who has had surgery to remove tonsils or adenoids. Talk with your child's doctor.
Uses of Trezix:
- It is used to ease pain.
What do I need to tell my doctor BEFORE I take Trezix?
- If you have an allergy to acetaminophen, caffeine, dihydrocodeine, or any other part of this medicine.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have any of these health problems: Lung or breathing problems like asthma, trouble breathing, or sleep apnea; high levels of carbon dioxide in the blood; or stomach or bowel block or narrowing.
- If you are taking any of these drugs: Buprenorphine, butorphanol, nalbuphine, or pentazocine.
- If you have taken certain drugs used for low mood (depression) like isocarboxazid, phenelzine, or tranylcypromine or drugs used for Parkinson's disease like selegiline or rasagiline in the last 14 days. Taking Trezix within 14 days of those drugs can cause very bad high blood pressure.
- If you are taking any of these drugs: Linezolid or methylene blue.
- If you are breast-feeding. Do not breast-feed while you take this medicine.
This is not a list of all drugs or health problems that interact with Trezix.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Trezix?
- Tell all of your health care providers that you take Trezix (acetaminophen, caffeine, and dihydrocodeine). This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how this medicine affects you.
- To lower the chance of feeling dizzy or passing out, rise slowly if you have been sitting or lying down. Be careful going up and down stairs.
- If you have been taking Trezix for a long time or at high doses, it may not work as well and you may need higher doses to get the same effect. This is known as tolerance. Call your doctor if this medicine stops working well. Do not take more than ordered.
- If you have been taking Trezix on a regular basis and you stop it all of a sudden, you may have signs of withdrawal. Do not stop taking this medicine all of a sudden without calling your doctor. Tell your doctor if you have any bad effects.
- Avoid other sources of acetaminophen. Check labels closely. Too much acetaminophen may cause problems.
- Call your doctor right away if you take more than 4,000 mg (milligrams) of acetaminophen in a day, even if you feel well.
- This medicine may affect certain lab tests. Tell all of your health care providers and lab workers that you take Trezix.
- Be careful if you have G6PD deficiency. Anemia may happen.
- Taking an opioid drug like this medicine may lead to a rare but very bad adrenal gland problem. Call your doctor right away if you have very bad dizziness or passing out, very bad upset stomach or throwing up, or if you feel less hungry, very tired, or very weak.
- Long-term use of an opioid drug like Trezix may lead to lower sex hormone levels. This may lead to signs like change in sex ability in men, no menstrual period in women, lowered interest in sex, or fertility problems. Call your doctor if you have any of these signs.
- If you are 65 or older, use this medicine with care. You could have more side effects.
- The chance of very bad side effects may be higher in children. This may be more likely to happen in children who have breathing problems. Deadly breathing problems have happened with the use of codeine in some children. Talk with the doctor.
- This medicine may cause harm to the unborn baby if you take it while you are pregnant. If you are pregnant or you get pregnant while taking Trezix, call your doctor right away.
How is this medicine (Trezix) best taken?
Use this medicine as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- Take with or without food. Take with food if it causes an upset stomach.
- Do not take more than what your doctor told you to take. Liver problems may happen.
- Do not take Trezix with other strong pain drugs or if you are using a pain patch without talking to your doctor first.
- If you are taking warfarin, talk with your doctor. You may need to have your blood work checked more closely while you are taking it with this medicine.
- Limit your use of caffeine (for example, tea, coffee, cola) and chocolate. Use with Trezix (acetaminophen, caffeine, and dihydrocodeine) may cause nervousness, shakiness, and a fast heartbeat.
- You will be watched closely to make sure you do not misuse, abuse, or become addicted to this medicine.
What do I do if I miss a dose?
- If you take Trezix on a regular basis, take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Many times this medicine is taken on an as needed basis. Do not take more often than told by the doctor.
See also: Dosage Information (in more detail)
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- Very bad dizziness or passing out.
- Change in balance.
- Feeling confused.
- Very nervous and excitable.
- Feeling very tired or weak.
- Very hard stools (constipation).
- Not able to pass urine or change in how much urine is passed.
- Fast or slow heartbeat.
- A heartbeat that does not feel normal.
- Fever or chills.
- Sore throat.
- Hallucinations (seeing or hearing things that are not there).
- Mood changes.
- Ringing in ears.
- Very bad headache.
- Trouble breathing, slow breathing, or shallow breathing.
- Noisy breathing.
- Feeling very sleepy.
- Any unexplained bruising or bleeding.
- Change in eyesight.
- A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.
- A very bad and sometimes deadly health problem called serotonin syndrome may happen if you take Trezix with drugs for depression, migraines, or certain other drugs. Call your doctor right away if you have agitation; change in balance; confusion; hallucinations; fever; fast or abnormal heartbeat; flushing; muscle twitching or stiffness; seizures; shivering or shaking; sweating a lot; very bad diarrhea, upset stomach, or throwing up; or very bad headache.
What are some other side effects of Trezix?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Hard stools (constipation).
- Feeling sleepy.
- Upset stomach or throwing up.
- Sweating a lot.
- Feeling tired or weak.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
See also: Side effects (in more detail)
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Trezix?
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer Information Use and Disclaimer
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- This medicine comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time this medicine is refilled. If you have any questions about Trezix, please talk with the doctor, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Trezix. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using Trezix.
Review Date: February 7, 2018
More about Trezix (acetaminophen / caffeine / dihydrocodeine)
- Side Effects
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- Drug class: narcotic analgesic combinations