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Codeine side effects can vary but most of them are very uncomfortable.
Generally, the side effects associated with codeine use are mild and do not require immediate medical attention. In some cases, if the side effects do not go away in time or with discontinued use of the drug, or if you suffer from certain side effects while taking codeine, medical attention will be required. Codeine is an opioid analgesic drug that is commonly prescribed for the treatment of mild to moderate pain and does not frequently cause allergic reactions.
The most widely observed adverse reactions to codeine include:
- drowsiness
- dizziness
- sedation
- shortness of breath
- nausea
- sweating
- constipation
- feeling lightheaded
Seek immediate medical attention if you have any of the following signs of an allergic reaction while taking codeine:
- hives
- swelling of the face, lips, tongue or throat
- difficulty breathing or swallowing
Some side effects of codeine are not considered an emergency but should be discussed with your doctor. For instance, if you feel like you are going to pass out or you are very confused while taking codeine, you should speak with your doctor at once.
Additional side effects of codeine that warrant the need for a talk with your doctor include:
- slowed heart rate
- weak pulse or shallow breathing
- agitation or unusual thoughts or behaviors
- hallucinations
- extreme feelings of happiness or depression
- seizures
- difficulty urinating
Codeine also has many side effects that may be bothersome or difficult for you to deal with but are not dangerous or harmful to your health and do not require doctor’s notice.
Some of the most common, but least serious side effects of codeine include:
- dizziness or drowsiness
- nausea, vomiting or stomach cramps
- constipation
- sweating
- itching
- mood swings
- headaches
- feeling lightheaded
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