Cyretib is celecoxib, in 100 mg and 200 mg capsules. It is an anti-inflammatory for arthritis, back pain and inflammatory joint conditions, designed to be gentler on the stomach than ordinary anti-inflammatories. That gentleness is real, but it comes with a trade-off worth understanding.
What is Cyretib?
The South African Medicine Price Registry lists Cyretib 100 and Cyretib 200 as Schedule 3 capsules containing celecoxib at 100 mg and 200 mg.
Celecoxib is a COX-2 selective inhibitor, sometimes called a coxib. It is a non-steroidal anti-inflammatory (NSAID), but a selective one.
The reason it exists is worth understanding. Ordinary anti-inflammatories such as ibuprofen and diclofenac block two enzymes:
- COX-2 produces the prostaglandins that cause pain, swelling and fever at a site of inflammation. Blocking this is the benefit.
- COX-1 produces prostaglandins that protect the stomach lining and help platelets clot. Blocking this is where the stomach damage and bleeding risk come from.
Celecoxib blocks COX-2 and largely leaves COX-1 alone. The result is a genuinely lower risk of stomach ulcers and bleeding — the main reason it is prescribed, particularly for people who need an anti-inflammatory long term but cannot tolerate the usual ones.
The trade-off is cardiovascular. COX-1 in platelets promotes clotting; COX-2 in blood vessel walls opposes it. Blocking only COX-2 tips that balance slightly towards clotting. Coxibs carry a small increased risk of heart attack and stroke, particularly at higher doses and with prolonged use. This is why an entire earlier drug in this class, rofecoxib, was withdrawn in 2004.
Celecoxib has been studied extensively since, and large trials found its cardiovascular risk comparable to that of ibuprofen and naproxen at equivalent doses — which is to say that ordinary anti-inflammatories carry this risk too, and it was not unique to the coxibs. The practical position is that celecoxib is a reasonable choice where stomach risk is the concern, at the lowest effective dose for the shortest useful time.
Celecoxib does not thin the blood the way aspirin does, and does not interfere with aspirin’s heart protection — an advantage over ibuprofen for people taking low-dose aspirin.
What is Cyretib commonly used for?
- Osteoarthritis — the wear-related joint disease of knees, hips, hands and spine. Its commonest use.
- Rheumatoid arthritis, for pain and stiffness alongside disease-modifying treatment.
- Ankylosing spondylitis and other inflammatory spinal conditions, where anti-inflammatories are a mainstay.
- Acute pain, including after injury or surgery.
- Period pain.
- Acute gout, in some prescribing.
- Chronic back and neck pain with an inflammatory component.
Two points shape its use:
It is prescribed most often for people who need an anti-inflammatory but have stomach risk — a history of ulcers or gastritis, older age, or the need for long-term treatment. For a short course in a healthy young person, plain ibuprofen is usually the sensible and much cheaper choice.
It does not work faster than other anti-inflammatories, and for inflammatory arthritis it may take several days of regular use to show its full effect. It is not a rescue painkiller.
It treats symptoms, not the disease. In rheumatoid arthritis particularly, it relieves pain and stiffness while the disease-modifying medicines do the work that actually changes the outcome.
How Cyretib fits into this medicine category
| Group | Examples | Notes |
|---|---|---|
| COX-2 selective | Celecoxib (Cyretib), etoricoxib | Gentler on the stomach; cardiovascular caution |
| Traditional NSAIDs | Ibuprofen, diclofenac, naproxen | Effective; stomach, kidney, heart cautions |
| Simple analgesics | Paracetamol | Pain and fever; no anti-inflammatory effect; safest |
| Corticosteroids | Prednisone | Powerful anti-inflammatory, given as courses |
| Opioid combinations | Tramadol/paracetamol | Stronger; dependence risk |
| Disease-modifying | Methotrexate, biologics | Change the course of inflammatory arthritis |
| Topical NSAIDs | Diclofenac gel | Local effect, far less absorbed |
For a single painful joint, a topical anti-inflammatory is often the better first step — it delivers the medicine where it is needed with a fraction of the whole-body exposure.
See the pain, inflammation and musculoskeletal medicines hub.
What to check before using Cyretib
Do not take it if you have a sulfonamide allergy. Celecoxib contains a sulfonamide group, and a previous reaction to sulfa medicines is a specific contraindication. Tell your doctor.
Also tell them if you:
- Have established heart disease, have had a heart attack or stroke, or have heart failure. Coxibs are generally avoided in these.
- Have high blood pressure. Anti-inflammatories raise it and can undermine blood pressure treatment.
- Have or have had a stomach ulcer or gut bleeding. Lower risk is not no risk.
- Have kidney disease or liver disease.
- Have asthma triggered by anti-inflammatories, or nasal polyps.
- Are over 65, where stomach, kidney and cardiovascular risks all rise.
- Smoke, have diabetes or high cholesterol — these add to the cardiovascular consideration.
- Take warfarin or another blood thinner, low-dose aspirin, steroids, an SSRI antidepressant, an ACE inhibitor, ARB or diuretic, lithium, methotrexate or fluconazole, which raises celecoxib levels.
- Are pregnant, particularly after 20 weeks, or breastfeeding. Anti-inflammatories are avoided.
- Are planning pregnancy — NSAIDs can interfere with ovulation.
Practical points:
- Take it with food to reduce stomach upset, though it can be taken without.
- Use the lowest effective dose for the shortest useful time. This is not caution for its own sake — both the stomach and cardiovascular risks are dose- and duration-related.
- Do not take another anti-inflammatory alongside it — no ibuprofen, diclofenac or naproxen. Doubling NSAIDs multiplies risk without improving relief.
- Low-dose aspirin for the heart is different and is usually continued, but confirm with your doctor.
- Drink enough fluid, particularly in hot weather or illness.
- Have your blood pressure and kidney function checked if you take it long term.
Possible cautions and when to ask a pharmacist or doctor
Common effects: indigestion, abdominal pain, diarrhoea, wind, nausea, headache, dizziness and ankle swelling.
Get emergency help for:
- Chest pain, sudden breathlessness, or signs of a stroke — face drooping, arm weakness, difficulty speaking.
- Vomiting blood or material like coffee grounds, or black tarry stools.
- Severe abdominal pain.
- A widespread rash, particularly with blistering, peeling, mouth sores or fever. Sulfonamide-containing medicines are associated with rare severe skin reactions.
- Swelling of the face, lips or tongue, or difficulty breathing.
Seek prompt advice for:
- Any rash, however mild it looks. Do not wait to see how it develops.
- Wheezing or worsening asthma.
- Swollen ankles, breathlessness on exertion, or sudden weight gain — possible fluid retention.
- Reduced urine output or unusual tiredness — possible kidney effects.
- A rise in blood pressure readings.
- Persistent indigestion or stomach pain.
- Yellowing of the skin or eyes.
Contact your doctor if pain is not controlled, if you need it continuously for months — which should prompt a review of whether something else would serve better — or if your circumstances change, such as developing heart or kidney problems. In osteoarthritis particularly, weight loss, strengthening exercise and physiotherapy change the trajectory in a way no anti-inflammatory does, and are worth pursuing alongside.
Related medicine guides
- Browse Pain, Inflammation & Musculoskeletal Medicines guides
- Read: Prednisone used for
- Read: Donapan used for
Frequently asked questions
What is Cyretib 200 used for? Osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute pain and period pain. It contains celecoxib, a COX-2 selective anti-inflammatory.
What is Cyretib 100 used for? The same conditions at a lower dose. The lowest effective dose is preferred, since both stomach and cardiovascular risks relate to dose and duration.
How is it different from ibuprofen or diclofenac? It blocks only COX-2, sparing the COX-1 enzyme that protects the stomach — so it causes fewer ulcers and less bleeding. It carries a small cardiovascular risk, though large trials found this comparable to ibuprofen and naproxen.
Is it safer than other anti-inflammatories? Safer for the stomach, which is why it is prescribed. Not safer overall, and generally avoided in established heart disease.
Can I take it if I am allergic to sulfa medicines? No. Celecoxib contains a sulfonamide group. Tell your doctor.
Can I take it with ibuprofen? No. It is already an anti-inflammatory. Combining them multiplies risk without improving relief.
Does it thin the blood? No, unlike aspirin and to a lesser extent other NSAIDs. It also does not interfere with low-dose aspirin’s heart protection.
How long does it take to work? For acute pain, within hours. For inflammatory arthritis, several days of regular use for the full effect.