in pictures and a few words
What it is and why it matters
Ketoprofen is an anti-inflammatory painkiller. What sets it apart: in dental pain it works noticeably better than after other operations.
- An average score across all operations is misleading here
- It isn’t sold without a prescription everywhere — that depends on the country
- Without a prescription doesn’t mean harmless: the risks are the same
In dental pain — among the best
After a tooth extraction, ketoprofen relieves pain on a par with the best painkillers. After other operations — noticeably less well.
- The difference between these cases is solid, not a fluke
- There are few studies in dental pain
- These data don’t prove it is stronger than any particular other medicine
Tested in people. Tested in people — after tooth extraction and after other operations.
Why the average misleads
An average describes a group, not a person. For ketoprofen it sits between two different results and fits neither.
- Because of it, ketoprofen ended up at the bottom of the overall painkiller ranking
- It’s better to choose by the situation than by an overall table
Why — nobody knows for sure
The review authors themselves call such a gap unusual and give no exact explanation.
- Probably, pain after a tooth extraction is largely inflammation
- And ketoprofen strongly dampens the substances that drive inflammation
- This is a plausible guess, not a proven mechanism
Dexketoprofen — the same story
Dexketoprofen is the “working half” of ketoprofen, so its doses are half as large. And the gap is the same: in dental pain it works noticeably better.
- Ketoprofen is a mix of two mirror-image forms; mostly one of them relieves pain
- So it comes down to the substance itself, not the tablet form or the maker
Where it’s sold without a prescription
The phrase “in Europe ketoprofen is prescription-only” is wrong. That’s true only in Germany; other countries differ.
- Germany — prescription only, no exceptions
- France — almost all by prescription; only one 25 mg form is sold without one
- Italy — about two thirds of oral packs need no prescription, up to 80 mg per dose
Without a prescription isn’t harmless
It is the same medicine with the same risks, wherever it is sold without a prescription.
- Never two anti-inflammatory painkillers at once: the risk grows, the benefit doesn’t
- No time limit in the documents doesn’t mean you can take it for weeks
- In France the non-prescription form is for adults and teens from 15 — as shown below
Who should see a doctor first
This medicine carries a notable risk for the stomach. Prescribing stays with a doctor.
- It reduces blood flow to the kidneys
- It can raise blood pressure
Important. Had an ulcer — ketoprofen only on a doctor’s decision.
In one sentence
In dental pain, ketoprofen is one of the best-founded options. But it is a medicine with risks: one such painkiller at a time, and not for weeks.
In Brief
| Ketoprofen | |
|---|---|
| Overall NNT at 50 mg | 2.9 (95% CI 2.4–3.7) |
| In dental pain | 1.8 (1.5–2.2), 3 studies, 190 participants |
| In other surgery | 4.2 (3.0–6.7), 5 studies, 404 participants |
| Significance of the gap | P < 0.00006 |
| Germany | Prescription-only, no exceptions |
| France | Almost all prescription; one OTC form at 25 mg |
| Italy | 68 of 105 oral packs OTC, up to 80 mg per dose |
An average is the most treacherous quantity in medicine. It describes a group and almost never describes a person. Ketoprofen is a rare case where that is visible directly in the review's own numbers.
Two Pictures Instead of One
The overall figure for ketoprofen 50 mg is an NNT of 2.9. It looks modest and places the drug at the bottom of the five. But split it by type of procedure and the average ceases to exist:
| Type of pain | NNT | Data |
|---|---|---|
| After tooth extraction | 1.8 (1.5–2.2) | 3 studies, 190 participants |
| After other surgery | 4.2 (3.0–6.7) | 5 studies, 404 participants |
The difference is more than twofold, and it is statistically significant: P below 0.00006. The two subgroups' confidence intervals do not overlap.
The Cochrane authors note this gap separately and call it unusual. Most analgesics differ between dental pain and other surgery, but rarely by this much.
The Same in Dexketoprofen
Dexketoprofen is the active half of the ketoprofen molecule, so its doses are halved. Its split is the same: 2.7 in dental pain against 5.7 in other procedures.
That is an important detail: the peculiarity belongs to the substance itself, not to a particular formulation or manufacturer.
Why This Might Be
The review offers no explanation, and it is honest to say that none exists. A plausible hypothesis: pain after tooth extraction has a pronounced inflammatory component, and ketoprofen is a potent suppressor of prostaglandin synthesis — that is, it works along precisely the inflammatory route.
But that is a hypothesis rather than a demonstrated mechanism, and presenting it as established fact would be the same overreach this whole series warns against.
Where It Is Sold — and Why the Common Claim Is Wrong
The statement «oral ketoprofen is prescription-only in Europe» is common and wrong. Checking the national registers of three countries gives three different pictures.
Safety
- Stomach. Ketoprofen sits among the NSAIDs with a notable gastrointestinal risk; with a history of peptic ulcer, only on a doctor's decision.
- Kidneys and blood pressure. As with the whole class, it reduces renal blood flow and can raise blood pressure.
- Never two NSAIDs at once. The analgesia does not add up; the risk does.
- Over-the-counter does not mean harmless. In Italy ketoprofen is sold freely at doses up to 80 mg, but it is the same drug with the same risks; the absence of a day limit in the documents does not mean weeks of use are safe.
The Bottom Line
Ketoprofen illustrates neatly why painkiller rankings deserve caution. Its place at the bottom of the list is set by an average that does not exist in reality: in dental pain it performs like the leader, in other procedures markedly worse.
Choose by situation rather than by table, and for dental pain it is one of the better-founded options. As for «ketoprofen is prescription-only in Europe» — that belief is worth dropping: it holds for Germany alone.
About buying
The drug is in the catalogue: OKI (ketoprofen lysine salt) 80 mg. No price is shown — prescription medicines are ordered through the chat, and the administrator confirms availability and cost. The prescribing stays with a doctor: this guide explains what is known about the drug, it does not replace a consultation.
Key facts
- Overall NNT 2.9 (95% CI 2.4–3.7) — but that is the average of two very different pictures.
- In dental pain the NNT is 1.8 (1.5–2.2); in other surgery, 4.2 (3.0–6.7); the difference is significant at P < 0.00006.
- The Cochrane authors describe the gap between dental pain and other surgery as unusual.
- Dexketoprofen shows the same pattern: 2.7 in dental pain against 5.7 in other procedures.
- «Ketoprofen is prescription-only in Europe» is wrong — that holds for Germany alone.
- In Italy 68 of 105 oral packs are sold without prescription; France has one over-the-counter form.
