Codeine
Why this is used
Codeine is used to relieve mild to moderate pain. It is also used, usually in combination with other medications, to reduce coughing. Combination products that contain codeine and promethazine should not be used in children younger than 16 years of age. Codeine will help relieve symptoms but will not treat the cause of symptoms or speed recovery. Codeine belongs to a class of medications called opiate (narcotic) analgesics and to a class of medications called antitussives. When codeine is used to treat pain, it works by changing the way the body senses pain. When codeine is used to reduce coughing, it works by decreasing the activity in the part of the brain that causes coughing. Codeine is also available in combination with acetaminophen (Capital and Codeine, Tylenol with Codeine); aspirin; and in many cough and cold medications. This monograph only includes information about the use of codeine. If you are taking a codeine combination product, be sure to read information about all the ingredients in the product you are taking and ask your doctor or pharmacist for more information.
How to take it
Codeine (alone or in combination with other medications) comes as a tablet, a capsule, and a solution (liquid) to take by mouth. It is usually taken every 4 to 6 hours as needed. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take codeine exactly as directed. Codeine can be habit-forming. Do not take a larger dose, take it more often, or take it for a longer period of time than prescribed by your doctor. Shake the solution well before each use to mix the medication evenly. Do not use a household spoon to measure your dose. Use the measuring cup or spoon that came with the medication or use a spoon that is made especially for measuring medication.
Side effects
<p></p> <p></p> <p></p> <p>Codeine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
<ul>
<li>
dizziness</li>
<li>
lightheadedness</li>
<li>
headache</li>
<li>
drowsiness</li>
<li>
mood changes</li>
<li>
nausea</li>
<li>
vomiting</li>
<li>
constipation</li>
<li>
stomach pain</li>
<li>
difficulty urinating</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
difficulty breathing or swallowing</li>
<li>
fast, pounding, or irregular heartbeat</li>
<li>
rash</li>
<li>
itching</li>
<li>
hives</li>
<li>
changes in vision</li>
<li>
seizures</li></ul>Codeine may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
<ul>
<li>
dizziness</li>
<li>
lightheadedness</li>
<li>
headache</li>
<li>
drowsiness</li>
<li>
mood changes</li>
<li>
nausea</li>
<li>
vomiting</li>
<li>
constipation</li>
<li>
stomach pain</li>
<li>
difficulty urinating</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
difficulty breathing or swallowing</li>
<li>
fast, pounding, or irregular heartbeat</li>
<li>
rash</li>
<li>
itching</li>
<li>
hives</li>
<li>
changes in vision</li>
<li>
seizures</li></ul>Codeine may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
Precautions
Before taking codeine, tell your doctor and pharmacist if you are allergic to codeine, any other medications, or any of the ingredients in the codeine product you plan to take. Ask your doctor or pharmacist for a list of the ingredients. tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: antidepressants; medications for cough, cold, or allergies; medications for anxiety, mental illness, nausea, or seizures; monoamine oxidase (MAO) inhibitors such as isocarboxazid (Marplan), phenelzine (Nardil), selegiline (Eldepryl, Emsam, Zelapar), and tranylcypromine (Parnate); sedatives; sleeping pills; and tranquilizers. Your doctor may need to change the doses of your medications or monitor you carefully for side effects. tell your doctor if you drink or have ever drunk large amounts of alcohol and if you have had recent abdominal or urinary tract surgery. Also tell your doctor if you have or have ever had a head injury; a brain tumor; any condition causing increased pressure in your brain; seizures; mental illness; lung disease such as asthma, chronic obstructive pulmonary disease (COPD, a group of diseases that cause gradual loss of lung function), or other breathing problems; prostatic hypertrophy (enlargement of a male reproductive gland); urinary problems; low blood pressure; Addison's disease (condition in which the body does not make enough of certain natural substances); allergies; or thyroid, pancreatic, intestinal, gallbladder, liver, or kidney disease. if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking codeine. you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you. If you are giving codeine to a child, watch the child to be sure he or she does not get hurt while riding a bike or participating in other activities that could be dangerous. talk to your doctor about the safe use of alcohol while you are taking this medication. Alcohol can make the side effects of codeine worse. you should know that codeine may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. This is more common when you first start taking codeine. To avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up. you should know that codeine may cause constipation. Talk to your doctor about changing your diet and using other medications to treat or prevent constipation.
Overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911. Symptoms of overdose may include:
<ul>
<li>
difficulty breathing</li>
<li>
excessive drowsiness</li>
<li>
loss of consciousness</li>
<li>
loss of muscle tone</li>
<li>
cold and clammy skin</li>
<li>
fainting</li>
<li>
dizziness</li>
<li>
slow heartbeat</li></ul>
<ul>
<li>
difficulty breathing</li>
<li>
excessive drowsiness</li>
<li>
loss of consciousness</li>
<li>
loss of muscle tone</li>
<li>
cold and clammy skin</li>
<li>
fainting</li>
<li>
dizziness</li>
<li>
slow heartbeat</li></ul>
Educational reference only — talk to a pharmacist or prescriber about Codeine.