A COX-2 selective NSAID
Celecoxib
A COX-2 selective anti-inflammatory painkiller for arthritis, gentler on the stomach than older NSAIDs but still carrying heart, kidney and stomach cautions.
What is Celecoxib?
Celecoxib is a non-steroidal anti-inflammatory drug (NSAID) of the COX-2 selective type, used to relieve the pain and inflammation of osteoarthritis, rheumatoid arthritis and similar conditions. It is designed to be a little gentler on the stomach than some older NSAIDs.
Education and reference only. This is a plain-language guide to Celecoxib — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Celecoxib is a non-steroidal anti-inflammatory drug (NSAID) of the "COX-2 selective" type, used to relieve the pain and inflammation of osteoarthritis and rheumatoid arthritis. Its main appeal is that it tends to be kinder to the stomach lining than older NSAIDs such as ibuprofen or naproxen, so it can suit people prone to indigestion or ulcers. However, "gentler on the gut" does not mean risk-free — like all NSAIDs it still carries cardiovascular, kidney and (to a lesser degree) stomach risks, and is used at the lowest effective amount for the shortest time that controls symptoms.
How it works
Inflammation and pain are driven partly by chemicals called prostaglandins, made by enzymes known as COX-1 and COX-2. Older NSAIDs block both. COX-1 helps protect the stomach lining, so blocking it is part of why traditional NSAIDs can cause ulcers. Celecoxib is designed to block mainly COX-2, the enzyme more involved in inflammation, while largely sparing COX-1 — which is why it tends to upset the stomach less. The same prostaglandin effect on the kidneys and blood vessels explains why heart and kidney cautions still apply.
Company & origin
Originated / developed by: G. D. Searle (now Pfizer).
Celecoxib, the first selective COX-2 inhibitor, was developed by G. D. Searle & Co. (then part of Monsanto) and co-promoted with Pfizer. It was approved by the US FDA in December 1998, marketed as Celebrex; Pfizer later acquired the molecule.
What it treats
Conditions Celecoxib is used for
Practical use
How to take Celecoxib
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Usually taken once or twice a day; taking it with food can reduce stomach upset.
- Use the lowest effective amount for the shortest time needed to control symptoms.
- Tell your doctor if you have indigestion, stomach pain or any sign of bleeding such as black stools.
- Keep well hydrated and report any ankle swelling or breathlessness.
- Check before combining with other painkillers or anti-inflammatories.
Weighing it up
Advantages & disadvantages of Celecoxib
Advantages
- Relieves arthritis pain and inflammation effectively.
- Less likely to cause stomach ulcers than some older NSAIDs.
- Taken once or twice daily.
Disadvantages
- Like other NSAIDs, it can increase the risk of heart attack and stroke, especially with long-term use.
- Can still cause stomach problems and affect kidney function.
- May raise blood pressure or cause fluid retention.
- Not suitable for everyone, including some people with heart, kidney or stomach conditions.
Practical use
Good to know
It is taken regularly during a flare or course rather than as a one-off, and is best used at the lowest amount that controls symptoms for the shortest sensible time. Because of cardiovascular risk, it is generally avoided in people with established heart disease, and blood pressure and kidney function are kept in mind. It can be taken with or without food. People who have had a serious allergic reaction to a sulfonamide ("sulfa") medicine need caution, as celecoxib is chemically related. Paracetamol is often tried first or alongside, to keep the NSAID amount down.
Who should not take it / use with caution
- People with active stomach or intestinal ulcers or bleeding, or a previous serious gut bleed linked to an NSAID.
- People with established heart disease, heart failure, peripheral artery disease, or a previous heart attack or stroke — the cardiovascular risk usually outweighs the benefit.
- People with significant kidney impairment, severe liver disease, in late pregnancy, or with a known allergy to sulfonamide medicines or to other NSAIDs (including aspirin-triggered asthma).
Monitoring
- Blood pressure
- Kidney function, especially in older people or those on blood-pressure medicines
- Any signs of stomach upset or bleeding
Side effects
- Indigestion, tummy pain, wind or nausea — usually less than with older NSAIDs but still possible.
- Fluid retention with ankle swelling and raised blood pressure, and headache or dizziness.
- Less commonly, effects on kidney function, and a small increase in the risk of heart attack or stroke with longer or higher use; rarely, serious gut bleeding or severe skin reactions — seek help for black stools, vomiting blood, or a spreading rash.
Key interactions
- Other NSAIDs and aspirin add to the gut and kidney risks and are generally not combined with it.
- Blood-pressure medicines (ACE inhibitors, ARBs and diuretics) can be made less effective and, together with an NSAID, can stress the kidneys (the "triple whammy").
- Anticoagulants and antiplatelets (such as warfarin or clopidogrel) raise bleeding risk; care also with lithium, methotrexate and ciclosporin.
Available as: Capsules (the usual form).
Answers
Celecoxib: frequently asked questions
Is celecoxib safer than ibuprofen or naproxen?
It is designed to be gentler on the stomach lining than older NSAIDs, which can make it a better fit for people prone to indigestion or ulcers. But it is not risk-free: the heart, kidney and blood-pressure cautions are similar, and longer use can carry a small increase in cardiovascular risk. It is "different", not simply "safer".
I have a sulfa allergy — can I take it?
Celecoxib is chemically related to sulfonamide ("sulfa") medicines, so if you have had a serious allergic reaction to a sulfa drug, you should not normally take it. Tell your prescriber and pharmacist about any such allergy so a different painkiller can be chosen.
Can I take it with my blood-pressure tablets?
Use caution. NSAIDs including celecoxib can make blood-pressure medicines less effective and, especially alongside a water tablet (diuretic), can put strain on the kidneys. Your blood pressure and kidney function may be checked. Mention all your medicines to your pharmacist before starting.
Do I take it every day or only when sore?
For arthritis it usually works best taken regularly during a flare or course rather than as an occasional one-off, but the aim is always the lowest amount for the shortest time that controls your symptoms. Many people combine it with paracetamol to keep the NSAID use down.
What is the difference between celecoxib and Celebrex?
They are the same medicine — celecoxib is the generic (active-ingredient) name and Celebrex is the brand. Generic celecoxib contains the identical active ingredient and works the same way; it is usually cheaper.
The wider class
About NSAIDs
Celecoxib belongs to the nsaids class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
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Authoritative sources
- BNF: Celecoxib.
- electronic Medicines Compendium (SmPC): Celecoxib (Celebrex).
- NICE: NSAIDs — prescribing issues.
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