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promethazine / codeine

Generic Phenergan with Codeine
Used for Cold Symptoms, Cough
Used for Cold Symptoms, Cough

Promethazine with codeine is a combination medication containing a phenothiazine and an opioid. It's used to treat cough and nasal symptoms caused by respiratory infections or allergies in adults. Promethazine with codeine comes as an oral solution that's taken by mouth every 4 to 6 hours. It's meant for short-term use only because it can be habit-forming. Possible side effects of this medication include sleepiness, dizziness, and dry mouth. Avoid drinking alcohol while taking promethazine with codeine because doing so can result in slowed breathing, a dangerous interaction.

Last reviewed on March 31, 2024
Promethazine with codeine is a controlled substance, which means that it's more likely to be misused or cause dependence. There are federal and state laws that limit the amount of medication that can be prescribed or dispensed within a certain period of time.
basics-icon

What is Promethazine with codeine?

What is Promethazine with codeine used for?

  • Respiratory symptoms caused by allergies or the common cold, including cough, runny nose, and sneezing

How Promethazine with codeine works

Promethazine with codeine is a combination of two medications that work together:

Are you looking for information on promethazine (Phenergan) or codeine instead?
When does Promethazine with codeine start working?
Time passed since treatment started:
MINUTES
HOURS
DAYS
WEEKS
MONTHS
Initial effect
Full effect

Drug Facts

Common BrandsPhenergan with codeine (brand name no longer available)
Drug ClassPhenothiazine / Opioid
Controlled Substance ClassificationSchedule V
Generic StatusLower-cost generic available
AvailabilityPrescription only
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$38.47(save 61.72%)
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What are the risks and warnings for Promethazine with codeine?

Promethazine with codeine can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.

risk-warning

Potential for dependence and misuse

  • Risk factors: History of alcohol or substance misuse | Taking more promethazine with codeine than prescribed | Suddenly stopping promethazine with codeine

    The codeine in promethazine with codeine carries a risk of addiction or misuse, even at recommended doses. In serious cases, addiction and misuse of an opioid medication can lead to overdose and death. Your healthcare professional (HCP) will prescribe the lowest amount of promethazine with codeine for the shortest period of time needed to treat your symptoms. If you've taken promethazine with codeine for 5 days and your cough hasn't gotten better, then this medication isn't likely a good choice for you. In this case, contact your prescriber to discuss alternatives.

    risk-warning

    Dangerously slow breathing (respiratory depression)

    • Risk factors: Older adults | Children younger than 12 years old | Children younger than 18 years old after tonsil or adenoid surgery | Taking medications that can cause slow breathing | Drinking alcohol | Having medical conditions that affect breathing | Taking higher doses of promethazine with codeine | Ultra-rapid metabolizers of promethazine with codeine | Breastfed babies from mothers taking promethazine with codeine

      Promethazine with codeine can cause dangerously slow breathing, which can be life-threatening. This can happen at any time, but you're at higher risk 1 to 3 days right after you start promethazine with codeine or if your HCP raises your dose. Drinking alcohol and taking other medications, like benzodiazepines, can also raise your risk for this dangerous side effect. You also might be at risk if you have certain genetics that affect the way your body processes promethazine with codeine.

      You're recommended to ask your prescriber about getting naloxone (Narcan) before you start promethazine with codeine so that you can have it available in case of an accidental overdose. If you or your loved one notice you have trouble breathing or have bluish-colored lips, fingers, or toes, call 911 to get medical help right away.

      risk-warning

      Difficulty concentrating and extreme sleepiness

      • Risk factors: Taking higher doses of promethazine with codeine | Age 65 years or older | Drinking alcohol | Taking other medications that can cause sleepiness

        Promethazine with codeine can cause extreme sleepiness and lower your ability to think, react, and focus. Your risk is higher if you're taking other medications that can make you sleepy, such as benzodiazepines, muscle relaxants, and sleep medications. Make sure you know how this medication affects you before driving a car or doing activities that require your concentration. Talk to your HCP right away if you feel too sleepy from taking promethazine with codeine.

        risk-warning

        Risk of accidental overdose

        To prevent accidentally taking too much promethazine with codeine, only use a accurate milliliter measuring device, such as an oral medication syringe, to measure your dose. If you don't already have one at home, ask your pharmacist.

        risk-warning

        Serious medication interactions

        Promethazine with codeine can interact with many medications. For example, taking certain medications, like erythromycin (Ery-tab) and ritonavir (Norvir), can raise the level of codeine and put you at higher risk for breathing problems. And starting certain medications, like rifampin (Rifadin) or carbamazepine (Tegretol), while you're already taking promethazine with codeine might lower the level of codeine and put you at risk for withdrawal symptoms.

        Before starting promethazine with codeine, make sure your care team is aware of all the medications you're currently taking. Don't start or stop any medications without first checking with your care team.

        risk-warning

        Harm to newborn babies

        If you take promethazine with codeine during pregnancy, you can pass the medication to your unborn baby. Long-term use during pregnancy can cause your unborn baby to become dependent on opioids. Once your baby is born, they can experience withdrawal symptoms, such as high-pitched crying, poor feeding and sucking behavior, trembling, irritability, abnormal sleep patterns, and seizures. This condition is called neonatal opioid withdrawal syndrome and can be life-threatening if not recognized and treated in time. Let your healthcare provider know if you've used promethazine with codeine during pregnancy or if you notice these symptoms in your baby.

        risk-warning

        Low blood pressure

        Promethazine with codeine can cause extremely low blood pressure, including a drop in blood pressure when you stand from a sitting or lying down position. This can lead to dizziness and fainting. To avoid falling, get up slowly if you've been sitting or lying down. If dizziness or lightheadedness doesn't go away, talk to your HCP.

        risk-warning

        Low adrenal hormone levels

        Though rare, opioids like promethazine with codeine can cause your adrenal hormone levels to drop. This is more likely to happen after taking opioids for longer than 1 month. Symptoms include nausea, vomiting, not feeling hungry, tiredness, dizziness, and weakness. Let your HCP know right away if you experience these symptoms because you might need to stop promethazine with codeine and be treated with corticosteroids.

        risk-warning

        Seizures

        • Risk factors: History of seizure conditions

          Opioids can cause people with a history of seizures to have seizures more often. Promethazine with codeine can also raise your risk of seizures in certain situations. Let your HCP know if you have seizures more often while taking promethazine with codeine.

          risk-warning

          Neuroleptic malignant syndrome (NMS)

          • Risk factors: Taking other antipsychotic medications

            The promethazine in promethazine with codeine can cause a rare, but life-threatening condition called neuroleptic malignant syndrome (NMS). Symptoms include fever, sweating, stiff muscles, confusion, not aware of your surroundings, and fast or irregular heartbeat. If you experience any of these symptoms while taking promethazine with codeine, seek medication attention as soon as possible. You HCP will likely have you stop taking promethazine with codeine and switch you to something else.

            risk-warning

            Difficulty controlling body movements

            • Risk factors: Taking other antipsychotic medications | Dehydrated | Children

              The promethazine in promethazine with codeine can cause uncontrolled body movements, such as eye-twitching or lip-smacking. The risk is higher for people who are dehydrated. If you experience any uncontrolled movements and aren't able to stop them, talk to your HCP right away.

              risk-warning

              Caution in certain medical conditions

              People with certain medical conditions shouldn't take promethazine with codeine.

              For example, this medication can't be taken by people with certain stomach-related conditions, such as slow movement of the gut. The codeine in this medication can worsen gut movement.

              Promethazine with codeine isn't appropriate for people with head injuries, brain tumors, or other brain-related medical conditions. This is because this medication can slow breathing and lower oxygen levels in the brain, which can be dangerous.

              Before starting promethazine with codeine, make sure to let your medical team know about what medical conditions you have so that they can check to see if this medication is safe for you to take.

              risk-warning

              Risk of inaccurate lab results

              Promethazine with codeine can interfere with certain lab tests. For example, it can cause pregnancy tests to have false-positive or false-negative results. It can also cause blood sugar tests to be falsely high. Make sure to tell your HCP you're taking promethazine with codeine if you're receiving any lab tests.

              basics-icon

              What are the side effects of Promethazine with codeine?

              The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

              Common Side Effects

              • Sleepiness
              • Trouble concentrating
              • Lightheadedness
              • Dizziness
              • Headache
              • Dry mouth
              • Nausea
              • Vomiting
              • Constipation
              • Trouble breathing
              • Sweating

              Other Side Effects

              • Tired feeling
              • Falling
              • Swelling of the arms or legs
              • High or low blood pressure
              • Blurry vision
              • Confusion
              • Sensitivity to light
              • Hallucinations
              • Heartburn
              • Diarrhea
              • Stomach pain

              Serious Side Effects

              Contact your healthcare provider immediately if you experience any of the following.
              • Dangerously slow breathing: trouble breathing; bluish-colored lips, fingers, or toes
              • Accidentally taking too much (overdose): not responding to sound or touch, slowed breathing, extreme sleepiness, slow heartbeat, upper right-sided stomach pain, dark urine, cold or clammy skin, yellowing of your skin or eyes
              • Opioid withdrawal: anxiety, suicidal thoughts, restlessness, runny nose, yawning, sweating, chills, wide pupils, irritability
              • Neuroleptic malignant syndrome (NMS): fever, sweating, stiff muscles, confusion, not aware of your surroundings, fast or irregular heartbeat
              When do Promethazine with codeine possible side effects begin and end?
              Time passed since treatment started:
              MINUTES
              HOURS
              DAYS
              WEEKS
              MONTHS
              Sleepiness
              Dizziness
              Nausea or vomiting
              Constipation
              Trouble breathing
              Seek immediate medical care if you experience this side effect.

              Source: DailyMed

              The following side effects have also been reported

              Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

              Check with your doctor immediately if any of the following side effects occur:

              Incidence not known

              Bluish lips or skin

              chills

              clay-colored stools

              cold sweats

              confusion

              cough

              dark urine

              decrease in the frequency of urination

              decrease in the urine volume

              diarrhea

              difficult or troubled breathing

              difficulty in passing urine (dribbling)

              dizziness

              dizziness, faintness, or lightheadedness when getting up from lying or sitting position

              fast, pounding, or irregular heartbeat or pulse

              feeling of warmth

              fever

              headache

              high fever

              hives or welts, itching, or rash

              increased sweating

              irregular, fast or slow, or shallow breathing

              large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

              loss of appetite

              loss of bladder control

              nausea

              noisy breathing

              not breathing

              painful urination

              pale or blue lips, fingernails, or skin

              rectal bleeding

              redness of the face, neck, arms, and occasionally, upper chest

              redness of the skin

              seeing, hearing, or feeling things that are not there

              seizures

              severe muscle stiffness

              shakiness in the legs, arms, or hands

              stomach pain

              sweating

              tightness in the chest

              tiredness

              trembling or shaking of the hands or feet

              unpleasant breath odor

              unusual tiredness or weakness

              unusually pale skin

              vomiting of blood

              yellow eyes or skin

              Get emergency help immediately if any of the following symptoms of overdose occur:

              Symptoms of overdose

              Cold, clammy skin

              dry mouth

              fainting

              no blood pressure or pulse

              no muscle tone or movement

              pinpoint pupils (black part of the eye)

              stopping of the heart

              unconsciousness

              Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

              Incidence not known

              Bad dreams

              blurred or loss of vision

              confusion as to time, place, or person

              continuing ringing or buzzing or other unexplained noise in the ears

              difficulty having a bowel movement

              disturbed color perception

              double vision

              drowsiness

              false or unusual sense of well-being

              halos around lights

              hearing loss

              holding false beliefs that cannot be changed by fact

              increased sensitivity of the skin to sunlight

              night blindness

              overbright appearance of lights

              redness or other discoloration of the skin

              relaxed and calm feeling

              severe sunburn

              sleepiness

              trouble sleeping

              tunnel vision

              unusual excitement, nervousness, or restlessness

              vomiting

              Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

              Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

              pros-and-cons

              Pros and cons of Promethazine with codeine

              thumbs-up

              Pros

              Starts to work within 20 minutes

              Available as a lower-cost generic medication

              Good option for people who don't want to take tablets

              thumbs-down

              Cons

              Doesn't work as well as other medications

              Not safe for children

              Not the best choice to take while pregnant or breastfeeding

              Contains alcohol

              pharmacist-tips

              Pharmacist tips for Promethazine with codeine

              pharmacist
              • Since promethazine with codeine works rather quickly, you only have to take it as needed when you're having symptoms. Most people continue to feel effects for about 4 to 6 hours after a dose, but it's possible for it to last up to 12 hours.

                • You can take promethazine with codeine with or without food. If it's upsetting your stomach, try taking it with food to help.

                  • Store the medication at room temperature. Be sure to use a medication dose cup, spoon, or syringe to measure out your dose. Using household teaspoons might cause you to take the wrong amount of promethazine with codeine.

                    • If you've been taking promethazine with codeine regularly for a period of time and want to stop, talk with your prescriber first. They might need to lower your dose slowly over time before you can stop completely. This is to help you avoid withdrawal symptoms, such as anxiety, sweating, chills, and irritability.

                      • Promethazine with codeine causes dizziness and sleepiness. Avoid activities that require you to be alert (like driving) until you know how it affects you. Avoid alcohol because it can worsen sleepiness and dizziness, and can also harm your ability to think or react.

                        • Constipation can happen from promethazine with codeine. Drink enough water each day and add more foods with fiber to your diet. Speak to your care team if these lifestyle changes aren't enough to help with this side effect. They can recommend medications or a change in your treatment.

                          • Let your prescriber know if you're pregnant before starting promethazine with codeine. It isn't recommended during pregnancy because it raises the risk for birth defects and complications at birth, including neonatal abstinence syndrome.

                            • Tell your healthcare team if you're breastfeeding. It's typically recommended to avoid promethazine with codeine because the opioid medication can get into breast milk. This raises the risk for serious side effects to your baby (e.g., sleepiness, slowed breathing).

                              • Store promethazine with codeine out of reach from children, pets, or visitors. If you don't need to take promethazine with codeine anymore, choose a medication take-back option to get rid of it safely. This lowers the risk of accidental overdose and helps prevent medication misuse.

                                faqs

                                Frequently asked questions about Promethazine with codeine

                                Is promethazine with codeine an opioid or narcotic?
                                Yes, promethazine with codeine is a narcotic because codeine is an opioid medication. So promethazine with codeine is considered a controlled substance.
                                Is promethazine with codeine habit-forming?
                                The codeine part of promethazine with codeine can be habit-forming. To lower the risk for dependence or addiction, your healthcare professional will prescribe the lowest dose of promethazine with codeine needed for the shortest period of time to treat your symptoms.
                                Is promethazine with codeine a controlled substance?
                                Yes, promethazine with codeine is a schedule V controlled substance because it has a risk of misuse and dependence.
                                Does promethazine with codeine make you sleepy?
                                Yes, both promethazine and codeine, can make you sleepy. Taking this medication can affect your ability to focus, think, or react. Don't drive or do anything requiring your full attention, especially during the first few days following treatment or a change in your dose, until you know how this medication affects you. Also, avoid drinking alcohol or taking certain other medications, like benzodiazepines or muscle relaxants, at the same take as promethazine with codeine. Doing so will not only worsen sleepiness, but also put you at higher risk for serious breathing problems.
                                Does promethazine with codeine expire?
                                Yes, promethazine with codeine can expire. There should be an expiration date written on the medication bottle. Don't use promethazine with codeine past the written expiration date because it might not work well to help treat your symptoms or might cause harm.
                                How fast does promethazine with codeine start to work?
                                You might start to notice your cough or runny nose improve about 20 minutes after a dose of promethazine with codeine.
                                How long does promethazine with codeine stay in your system?
                                It takes about 16 hours for the majority of codeine to leave your body after a dose; and it takes about 3 days for promethazine to do the same. This time frame is estimated based on the half-life of promethazine with codeine. It might differ depending on what other medications you're taking and what other medical conditions you have.
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                                dosage

                                Promethazine with codeine dosage forms

                                The average cost for 240 ml of 6.25mg/10mg/5ml of Promethazine with codeine is $14.73 with a free GoodRx coupon. This is 61.72% off the average retail price of $38.47.
                                ml of syrup
                                Ml of syrup
                                DosageQuantityPrice as low asPrice per unit
                                6.25mg/10mg/5ml240 ml$14.73$0.06

                                Typical dosing for Promethazine with codeine

                                Each 5 mL of promethazine with codeine contains 10 mg of codeine and 6.25 mg of promethazine.

                                • Adults: The typical dose is 5 mL by mouth every 4 to 6 hours as needed. Don't take more than 30 mL (6 teaspoonfuls) in a day.

                                interactions

                                Interactions between Promethazine with codeine and other drugs

                                Promethazine with codeine may interact with certain medications or supplements. Always let your doctor and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking. The list below does not include all possible drug interactions with Promethazine with codeine. Please note that only the generic name of each medication is listed below.

                                Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

                                Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

                                Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

                                • Aminolevulinic Acid
                                • Belladonna
                                • Belladonna Alkaloids
                                • Betel Nut
                                • Evening Primrose
                                • Midodrine
                                • Phenylalanine
                                drug-cost

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                                contraindications-icon

                                Promethazine with codeine contraindications

                                Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Promethazine with codeine will not be safe for you to take.
                                • Children younger than 12 years of age

                                • Children younger than 18 years of age for pain management after tonsil or adenoid surgery

                                • Severely slowed breathing (respiratory depression)

                                • Severe asthma

                                • Conditions that cause blockage of the stomach passageway

                                • Allergy to promethazine

                                • Allergy to codeine or another opioid

                                • Current or recent (within 2 weeks) use of a monoamine oxidase inhibitor (MAOI)

                                alternatives

                                What are alternatives to Promethazine with codeine?

                                There are a number of medications that your doctor can prescribe in place of Promethazine with codeine. Compare a few possible alternatives below.
                                Promethazine with codeine
                                Used for:
                                • Respiratory symptoms caused by allergies or the common cold, including cough, runny nose, and sneezing

                                $14.73 Lowest GoodRx priceView Prices
                                Used for:
                                $6.61 Lowest GoodRx priceView Prices
                                Used for:
                                • Cough in people ages 10 years and older

                                $11.31 Lowest GoodRx priceView Prices

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                                References

                                Best studies we found

                                American College of Obstetricians and Gynecologists. (2021). Breastfeeding challenges: ACOG committee opinion, number 820. Obstetric & Gynecology.

                                Centers for Disease Control and Prevention. (n.d.). Protect your child: Use the right tool to give the right dose.

                                Centers for Disease Control and Prevention. (2024). About opioid use during pregnancy.

                                View All References (11)

                                Department of Justice/Drug Enforcement Administration. (2020). Narcotics.

                                Drugs and Lactation Database (LactMed®). (2023). Codeine. National Institute of Child Health and Human Development.

                                Holzinger, F., et al. (2014). The diagnosis and treatment of acute cough in adults. Deutsches Arzteblatt International.

                                Jansson, L. M., et al. (2019). Neonatal abstinence syndrome. Pediatric Clinics of North America.

                                National Institute of Diabetes and Digestive and Kidney Diseases. (2018). Adrenal insufficiency & Addison’s disease.

                                National Institute of Diabetes and Digestive and Kidney Diseases. (2018). Symptoms & causes of adrenal insufficiency & Addison's disease.

                                Peechakara, B. V., et al. (2024). Codeine. StatPearls.

                                Southard, B. T., et al. (2024). Promethazine. StatPearls.

                                Takahashi, P. Y., et al. (2017). Increased risk of hospitalization for ultrarapid metabolizers of cytochrome P450 2D6. Pharmacogenomics and Personalized Medicine.

                                Tris Pharma Inc. (2023). Promethazine hydrochloride and codeine phosphate- promethazine hydrochloride and codeine phosphate solution [package insert]. DailyMed.

                                U.S. Food and Drug Administration. (2022). Drug disposal: Drug take back locations.

                                GoodRx Health has strict sourcing policies and relies on primary sources such as medical organizations, governmental agencies, academic institutions, and peer-reviewed scientific journals. Learn more about how we ensure our content is accurate, thorough, and unbiased by reading our editorial guidelines.
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