Codeine/guaifenesin is a cough syrup that contains an expectorant and an opioid. It's used to help loosen mucus and calm coughs in adults and older children. Codeine/guaifenesin is taken by mouth, typically every 4 hours as needed. But it's meant for short-term use only because it contains codeine, which is a controlled substance and can be habit-forming. Some side effects of codeine/guaifenesin include sleepiness and nausea. Brand name Cheratussin AC has been discontinued.
Temporarily easily cough from throat or lung irritations
Loosens mucus so that its easier to cough up
Codeine/guaifenesin is a combination of two medications:
Guaifenesin is an expectorant that thins and loosens the mucus in the lungs, making it easier to cough it up.
Codeine is an opioid medication that works in the brain to lessen your urge to cough.
Codeine/guaifenesin 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 factors: Personal or family history of alcohol or substance use disorder | Personal or family history of mental health problems
Codeine/guaifenesin is a controlled substance because it contains codeine, which has a risk for addiction and misuse. Take the medication exactly as prescribed. Taking more than the prescribed amount of codeine/guaifenesin raises the risk for serious and possibly life-threatening side effects, such as dangerously slow breathing, inability to stay awake, and opioid overdose. Your healthcare provider will prescribe the lowest amount of codeine/guaifenesin that's necessary to manage your pain for the shortest period of time possible. If you've been taking medication for 7 days and don't feel any better, contact your provider to discuss alternatives.
Codeine/guaifenesin is for short-term treatment of cough only. Taking it longer than recommended can raise the risk for dependence and addiction, as well as the risk for side effects, like breathing problems. Codeine/guaifenesin isn't meant to ease cough from chronic (long-term) conditions such as asthma, emphysema, and chronic bronchitis. It's also not meant to help with cough from smoking. If you have any of these conditions, speak to your provider because they'll likely make other recommendations.
Also, you should stop taking Codeine/guaifenesin and talk to your provider if your cough lasts longer than 7 days, if it stops and returns, or if you develop other symptoms such as a fever, rash, or headache that doesn't go away. These can be signs of a more serious condition that needs more medical attention.
The FDA issued a warning against children ages 12 years and under taking codeine medications for cough. This is because codeine medications can raise the risk of serious side effects, including life-threatening breathing problems, especially in children. If your child needs a cough medication, speak to your child's provider or your pharmacist to learn about safer alternatives.
Risk factors: People taking other medications that cause sleepiness or slow down breathing | Drinking alcohol while taking codeine/guaifenesin
Taking codeine/guaifenesin with benzodiazepines, opioids, sleeping medications, or alcohol can cause you to be extremely sleepy or have trouble breathing. This can be life-threatening and even lead to death. Don't drink alcohol while taking codeine/guaifenesin. If you regularly take other medications that cause drowsiness or affect breathing, discuss alternatives with your provider. There are safer options for treating a cough.
Source:Â DailyMed
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.
Although serious side effects occur rarely when this medicine is taken as recommended, they may be more likely to occur if: too much medicine is taken, it is taken in large doses, or it is taken for a long period of time.
Get emergency help immediately if any of the following symptoms of overdose occur:
For narcotic antitussive (codeine, dihydrocodeine, hydrocodone, or hydromorphone)-containing
Cold, clammy skin
confusion (severe)
convulsions (seizures)
drowsiness or dizziness (severe)
nervousness or restlessness (severe)
pinpoint pupils of eyes
slow heartbeat
slow or troubled breathing
If you are a nursing mother and you notice any of the following symptoms of overdose in your baby, get emergency help immediately:
Difficulty breathing
difficulty nursing
increased sleepiness (more than usual)
limpness
For acetaminophen-containing
increased sweating
loss of appetite
nausea or vomiting
stomach cramps or pain
swelling or tenderness in the upper abdomen or stomach area
For salicylate-containing
Any loss of hearing
bloody urine
confusion
convulsions (seizures)
dizziness or lightheadedness
drowsiness (severe)
excitement or nervousness (severe)
fast or deep breathing
hallucinations (seeing, hearing, or feeling things that are not there)
increased sweating
nausea or vomiting (severe or continuing)
shortness of breath or troubled breathing (for salicylamide only)
stomach pain (severe or continuing)
uncontrollable flapping movements of the hands, especially in elderly patients
unusual thirst
vision problems
For decongestant-containing
Fast, pounding, or irregular heartbeat
headache (continuing and severe)
nausea or vomiting (severe)
nervousness or restlessness (severe)
shortness of breath or troubled breathing (severe or continuing)
Check with your doctor as soon as possible if any of the following side effects occur:
For antihistamine- or anticholinergic-containing
Clumsiness or unsteadiness
convulsions (seizures
drowsiness (severe)
dryness of mouth, nose, or throat (severe)
flushing or redness of face
hallucinations (seeing, hearing, or feeling things that are not there)
restlessness (severe)
shortness of breath or troubled breathing
slow or fast heartbeat
For iodine-containing
Headache (continuing)
increased watering of mouth
loss of appetite
metallic taste
skin rash, hives, or redness
swelling of face, lips, or eyelids
For acetaminophen-containing
Unexplained sore throat and fever
unusual tiredness or weakness
yellow eyes or skin
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:
decreased sweating
difficult or painful urination
dizziness or lightheadedness
drowsiness
dryness of mouth, nose, or throat
false sense of well-being
increased sensitivity of skin to sun
nausea or vomiting
nightmares
stomach pain
thickening of mucus
trouble in sleeping
unusual excitement, nervousness, restlessness, or irritability
unusual tiredness or weakness
Not all of the side effects listed above have been reported for each of these medicines, but they have been reported for at least one of them. There are some similarities among these combination medicines, so many of the above side effects may occur with any of these medicines.
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.
Available as a lower-cost generic medication
Helps you cough less often
A possible option for people who can't swallow pills
Not for long-term use because can be habit-forming
Not for children under 12 years old
Can cause dizziness and drowsiness
Since codeine/guaifenesin works within an hour, you only have to take it as needed when you are having symptoms. Most people continue to feel effects for about 4 to 6 hours after taking this medication.
Some people will experience nausea after taking a dose. If this happens to you, try to take your dose after eating.
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 codeine/guaifenesin.
Codeine/guaifenesin causes dizziness and drowsiness. Avoid activities that require you to be alert (like driving) until you know how it affects you. These side effects are more intense if you're over 65 years old.
Drinking alcohol while taking codeine/guaifenesin raises your risk of side effects like drowsiness and dizziness. Sometimes, this combination can even be life-threatening, so it's best to wait until you no are no longer taking codeine/guaifenesin to have a drink.
Codeine/guaifenesin can be habit-forming and is only meant to be used for a short period of time. Long-term use of codeine/guaifenesin can cause dependence. Take it exactly as your provider prescribes. If your symptoms don't get better after taking this medication for 7 days, contact your provider.
Dosage | Quantity | Price as low as | Price per unit |
---|---|---|---|
100mg/10mg/5ml | 118 ml | $6.25 | $0.05 |
Each 5 mL contains 10 mg of codeine and 100 mg of guaifenesin.
Adults and children ages 12 years and older: The typical dose is 2 teaspoonfuls (10 mL) by mouth every 4 hours as needed for cough symptoms. Don't take more than 6 doses in 24 hours.
Children younger than 12 years old: Talk with your child's provider. The FDA currently warns against giving codeine medications for cough to children under 12 years old.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking any of these medicines, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using medicines in this class with any of the following medicines is not recommended. Your doctor may decide not to treat you with a medication in this class or change some of the other medicines you take.
Using medicines in this class 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.
Children younger than 12 years old
Severely slowed breathing (respiratory depression)
Severe asthma
Conditions that cause blockage of the stomach passageway
Taking a monoamine oxidase inhibitor (MAOI) medication at the same time or having taken one within the last 2 weeks
Allergy to codeine or other opioids
Temporarily easily cough from throat or lung irritations
Loosens mucus so that its easier to cough up
Short-term relief of coughs caused by minor throat or lung irritation (e.g., common cold)
Loosens and breaks up mucus in the airways (chest congestion)
Cough in people ages 10 years and older
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Method Pharmaceuticals, LLC. (2023). Codeine-guaifenesin- codeine phosphate and guaifenesin solution [package insert]. DailyMed.
Online Sunshine. (n.d.). The 2023 Florida Statutes (including Special Session C). The Florida Legislature.
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U.S. Food and Drug Administration. (2022). FDA Drug Safety Podcast: FDA restricts use of prescription codeine pain and cough medicines and tramadol pain medicines in children; recommends against use in breastfeeding women.
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