Codeine Phosphate 30mg Tablets: A Complete Guide

If you’re dealing with persistent or moderate pain, Codeine Phosphate 30mg tablets might be something your doctor has recommended. But what exactly is codeine, how does it work, and what should you know before taking it? This comprehensive guide covers everything—from its benefits to risks, proper dosage, legality, and more.

What is Codeine Phosphate?

Overview of Codeine as a Medication

Codeine is a type of opioid painkiller. It’s commonly used when other pain relievers like ibuprofen or paracetamol aren’t strong enough. It's available in tablet, liquid, and combination forms.

How Codeine Phosphate Works

Codeine works by acting on the central nervous system (CNS). It blocks pain signals in the brain and spinal cord, providing relief from various types of pain.

Common Uses of Codeine

Pain relief (especially dental or post-operative)
Dry, persistent cough suppression
In some cases, to treat diarrhoea

Codeine Phosphate 30mg Tablets

Dosage and Formulation

The 30mg tablet is a standard strength prescribed for moderate pain. Sometimes it’s used alongside paracetamol or ibuprofen for increased effectiveness.

Prescription Requirements in the UK

In the UK, Codeine 30mg is a prescription-only medicine (POM). You cannot legally buy it over the counter in this strength.

Who Can Take Codeine 30mg?

Generally suitable for:

Adults over 18
People with moderate pain not relieved by other medications

Not suitable for:

Children under 12
Those with breathing problems
People prone to substance abuse

Conditions Treated with Codeine

Moderate to Severe Pain

Ideal for:

Post-surgery pain
Dental procedures
Muscular and joint pain

Cough Suppression

Codeine can suppress coughing, especially dry or tickly coughs, by relaxing the cough reflex.

Diarrhoea Relief

Though less Codeine Phosphate 30mg Tablets has been used in managing certain types of diarrhoea due to its constipating effects.

How to Take Codeine Phosphate 30mg Tablets

Recommended Dosage

Typically:

1 tablet (30mg) every 4–6 hours as needed
Maximum of 240mg per day

How Often to Take It

Take only as prescribed. Overuse increases the risk of side effects and dependency.

Things to Avoid While Taking Codeine

Alcohol (increases drowsiness and risk of overdose)
Driving or operating machinery
Other sedatives or painkillers unless approved by your doctor

Benefits of Codeine Phosphate

Fast Pain Relief

It begins working within 30 to 60 minutes, offering effective relief for moderate pain.

Convenient Tablet Form

The 30mg dosage is easy to manage and can be taken discreetly.

Can Be Combined With Other Painkillers

Often prescribed in combination with:

Paracetamol (Co-codamol)
Ibuprofen

Side Effects and Risks

Common Side Effects

Drowsiness or dizziness
Constipation
Nausea and vomiting
Dry mouth

Serious Reactions

Difficulty breathing
Allergic reactions
Seizures (rare)

Seek immediate help if any of these occur.

Addiction and Dependency Risks

Long-term use can lead to:

Physical dependence
Tolerance (needing more to get the same effect)
Withdrawal symptoms when stopped

Codeine Phosphate and Addiction

Understanding Dependency

Codeine can be habit-forming. Even short-term use can lead to psychological dependency.

Signs of Misuse

Taking more than prescribed
Using it to relax or sleep
Feeling anxious without it

How to Use Safely

Follow dosage exactly
Don’t share with others
Speak to a doctor if you feel you’re relying on it

Who Should Avoid Codeine?

Children and Young Teens

The MHRA restricts codeine use in children under 18 for pain due to risk of breathing problems.

Pregnant or Breastfeeding Women

Codeine passes through the placenta and breast milk. Always consult a doctor before use.

People with Respiratory Conditions

Conditions like asthma or COPD can worsen with codeine use.

Interactions With Other Medications

Drugs That May Interact

Sedatives
Sleeping pills
Antidepressants

Alcohol and Sedatives

Mixing can slow breathing dangerously and increase drowsiness.

Medical Conditions to Mention to Your Doctor

Liver or kidney problems
History of drug abuse
Breathing difficulties

Buying Codeine Phosphate 30mg Tablets in the UK

Can You Buy It Over the Counter?

No. Codeine 30mg is only available via prescription in the UK.

Buying Codeine Online in the UK

You can buy it legally through registered online pharmacies after completing a health assessment.

Choosing a Reputable Pharmacy

Look for the GPhC logo
Verify their registration
Avoid websites offering “no prescription needed”

Alternatives to Codeine

Paracetamol and Ibuprofen

Often effective for mild to moderate pain and come with fewer risks.

Tramadol or Morphine

Stronger painkillers used for severe pain, but also have a higher risk of addiction.

Natural Pain Management Methods

Physiotherapy
Acupuncture
Meditation or yoga

Storage and Disposal

Store in a cool, dry place, away from children
Do not use past the expiration date
Return unused tablets to a pharmacy—do not flush or throw in the bin

Conclusion

Codeine Phosphate 30mg tablets are powerful tools for managing moderate pain when used correctly. They offer fast, effective relief but come with significant risks if misused. Always follow your doctor’s advice, avoid mixing with alcohol, and use them only when absolutely necessary. When handled responsibly, codeine can make a big difference in pain management—just be sure to treat it with respect.