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Codeine phosphate is an opioid pain-relieving drug, the origin of this drug is opium. The drug is an alkaloid, mostly generated from opium or chemically prepared through the process of methylation from morphine. The end result appears as white crystals.

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Codeine phosphate is an analgesic (pain-relieving) drug majorly indicated for the relief and cure of mild to moderate pain in several body parts. This drug is used to treat chronic pain when the other singular drug formulas such as paracetamol are not sufficient to cure pain. It also helps to reduce the intensity of dry cough and diarrhea.

Mechanism of Action:

Codeine phosphate’s working mechanism has similar properties to morphine, it helps in relieving pain by blocking the pain signals from CNS (Central Nervous System) to the affected body parts. It is a centrally narcotic analgesic acting as a CNS depressant which makes it is an addictive drug and can have an impact on respiratory depression.

Side Effects:

Each tablet of Codeine phosphate contains an opioid drug in it. Opioid drugs can put you at risk for addiction or abuse. Furthermore, misuse of this can cause an overdose which might lead to death.

However, some side effects of Codeine Phosphate UK may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine.

Common Codeine Phosphate Side effects with less severity

  • Excessive Sweating
  • Change In Vision (blurred or double eyesight)
  • Mouth dryness
  • Dizziness and fainting
  • seizure (convulsions)
  • Loss of Appetite
  • Headache
  • Decreased Urine Production and other effects on the immune system
  • Nervousness
  • A feeling of Sadness or mood swings
  • shallow breathing

More common side effects of codeine phosphate tablets

  • Constipation
  • Relaxed feelings and sense of well being (Euphoria)
  • Drowsiness
  • Generalized weakness (feel drained)
  • Nausea and vomiting
  • Stomach cramps


Many drugs interact with Codeine phosphate Uk can raise the chance of side effects like deadly breathing problems (stopped breathing during sleep), low blood pressure, complete or partial lung collapse airways known as Atelectasis. Moreover, it includes severe allergic reactions known as Anaphylaxis. These tend to have severe expressions. In case you experience any of the above-mentioned side effects that continue or are bothersome to you or even if you have any questions about them, ask your doctor for a better understanding.

Regular use of codeine can lead to addiction and tolerance. Symptoms of restlessness and irritability may result when treatment is stopped. People who are older adults and are overweight or malnourished are at more risk to face serious side effects of Codeine phosphate 30-150 mg.

Codeine is not approved for use by anyone younger than 12 years old.

Buy Codeine Phosphate Online

Codeine is a widely used analgesic, that is available in pharmacies over the counter (OTC) in several countries including the UK, South Africa, Ireland, France, and Australia. We always advise our customers to make their research before purchasing online medication. It will help them to get to know more about Codeine Phosphate’s side effects and usage.

We are a reliable and trustworthy online pharmacy. Buy Codeine Phosphate online and co-codamol tablets from our website with complete satisfaction. Customers purchase this medication online for their Pain Management and to help combat terminal illness, post-operative pain, also to relieve the symptoms of diarrhea.


Additional information




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Does codeine cause constipation?

Codeine is an opioid. Opioids can slow down the central nervous system which oversees how the body responds to pain. The nervous system also controls involuntary movements, including those of the digestive tract. For this reason, taking opioids can result in constipation. However, there are natural remedies available for opioid-induced constipation, for instance, drinking more water, eating more fiber, and getting exercise when possible. 

Consult with a healthcare professional or pharmacist before taking herbal remedies, as they may interact with or decrease the effectiveness of medications.

Codeine works directly on opioid receptors in the central nervous system and reduces feelings of pain by interrupting or blocking the signals transmission of pain from the brain to the body. People who suffer from pain reported that they experienced at least 50% pain relief over 4 to 6 hours with the intake of codeine 60 mg. It also suppresses the activity in the brain that controls coughing.
Yes, Codeine is good for relieving lower back pain. It is particularly effective when symptoms are mild. If no other treatment seems to work, lower back pain can be treated with opioids such as codeine.

No, Both tramadol and codeine are prescription opioid painkillers, and they seem to be equally effective in terms of pain relief. They both are prescribed to treat moderate pain. In addition to pain relief, codeine is also used as a cough suppressant. 

Although these two drugs are weaker than other opioids, tramadol and codeine are still habit-forming and can cause severe withdrawal symptoms if they are stopped abruptly. However, Tramadol may pose a slightly lower risk for addiction as compared to codeine.

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