The side effects of Codamol

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Codamol is a pain reliever. It contains paracetamol and often contains codeine phosphate (a narcotic pain reliever) as well. Codamol may also be prescribed to lower a fever.

Side effects

Codamol side effects range from common to serious. Patients who experience serious side effects should seek medical attention. According to Medical Look, common side effects include dizziness, malaise, lightheadedness, headache, feeling faint, dry mouth, fatigue, euphoria, drowsiness, nightmares, nausea/vomiting, swelling or redness at injection site, vision problems, pain during urination, abnormal weakness or tiredness, stomach cramps, constipation and insomnia. The less common and serious side effects of Codamol include dark urine, hallucinations, black, bloody or tarry stools, pale stools, white spots on mouth or lips, mood swings, side or lower back pain, depression, jaundice, flushing, sore throat, ringing in the ears, irregular heartbeat, facial swelling, restlessness, irregular breathing, sweating, uncontrolled movements and tremors.

How it works

Codamol helps to alleviate pain by mimicking endorphine effects. Endorphines occur naturally in the body and help to reduce pain. According to Medical Look, this medication mimics the pain-relieving effects of naturally occurring endorphines to alleviate a patient's pain.


Codamol side effects may be worse for patients with certain medical conditions. According to Medical Look, these conditions include drug addiction, alcohol abuse, depression, alcoholic liver disease, convulsion disorders, emotional problems, liver disease, brain diseases, kidney disease, head injuries, heart disease, lung diseases, colitis, emphysema, gallstones, enlarged prostate, epilepsy, asthma and low blood pressure.

Drug interactions

Certain drugs may interact with this medication leading to further Codamol side effects. According to RxList, drugs that might need to be avoided include blood-thinning medications, anti-seizure medications, other pain-relieving medications, cold medications and fever-reducing medications.

Risks and warnings

There is a risk of overdose with this medication and this is considered a medical emergency. According to Medical Look, overdose side effects of Codamol include clammy or cold skin, severe nervousness, severe weakness, severe restlessness, confusion, kidney damage, slow heartbeat, liver damage, severe drowsiness, low blood pressure and pinpoint pupils. Pregnant women should avoid this medication because taking it during pregnancy could cause the baby to be born addicted to Codamol. Children and the elderly should not take this medication. Breastfeeding women should only take it under close medical supervision.

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