Dexketoprofen: A fast-acting NSAID for short-term acute pain

What it is

Dexketoprofen is the active enantiomer of ketoprofen: the half of the molecule that does the work. That is why it achieves the same effect with lower doses (25 mg) than its predecessor. It is an NSAID designed for acute pain, with notable analgesic efficacy and an acceptable profile in short courses.

In Spain it comes as tablets and as granules for oral solution; the latter is absorbed slightly faster. Its summary of product characteristics limits treatment to the period with symptoms: it is not an NSAID for long-term use.

Mechanism of action

Like the other non-selective NSAIDs:

It inhibits COX-1 and COX-2, reducing prostaglandin synthesis
By lowering inflammatory mediators, pain relief is greater in pain with inflammation
Because it inhibits COX-1, it shares the gastric, kidney and cardiovascular risk of the family

At the counter

When to recommend it

Acute musculoskeletal pain: sprains, bruises, acute low back pain
Primary dysmenorrhoea
Dental pain
Mild to moderate acute pain in short courses

When not to

Active inflammatory bowel disease (Crohn's disease, ulcerative colitis)
Decompensated heart failure
History of active peptic ulcer
Moderate to severe kidney failure

What to say at the counter. What needs to be clear when supplying it is the duration: 'It is for the days when it hurts; if after a few days you still need it, the cause needs looking at.' And, as with any NSAID, take it with food if the stomach is sensitive.

Warnings

Important Peptic ulcer: a risk similar to other NSAIDs. Use gastric protection when there are risk factors.
Important Cardiovascular and cerebrovascular complications with long-term use, especially when there are risk factors.
Caution Fluid retention: it can decompensate heart failure. Keep an eye on patients with heart disease.
Caution Interactions with anticoagulants: it increases the risk of bleeding. Combine only if essential.

Pharmacokinetics

Absorption: Rapid oral absorption, with bioavailability around 90%. Onset of action at 30–45 minutes. The oral solution is absorbed slightly faster than the tablets.
Distribution: Widely distributed in tissues, especially inflamed areas. Plasma protein binding of 99%, which explains some interactions. It crosses the placenta.
Metabolism: Hepatic metabolism by glucuronidation. Unlike ketoprofen, it does not produce significant active metabolites.
Elimination: Renal elimination of conjugated metabolites. Half-life of 1–2 hours.

Dexketoprofen vs ibuprofen

Aspect	Dexketoprofen	Ibuprofen
Analgesic potency	High	Moderate to high
Anti-inflammatory activity	High	High
Onset of action	Fast (30–45 min; slightly sooner as oral solution)	Moderate (45–60 min; sooner with lysine salts)
Gastrointestinal risk	Similar	Similar
Usual dose	25 mg	400 mg

Dexketoprofen for acute pain in short courses. Ibuprofen has more experience of use, more presentations (including for children) and is cheaper.

Self-assessment

Three questions. When you check your answers you will see the explanation for each one.

What is the main advantage of dexketoprofen over the original ketoprofen? It is the active enantiomer, which allows lower doses with the same efficacy It has fewer side effects on the kidney It never needs gastric protection
A patient with an old peptic ulcer asks whether they can take dexketoprofen. Your answer? Not just like that: it is an NSAID and carries a risk of ulcer. Gastric protection or an alternative should be discussed with their doctor Yes, no problem, because it acts very quickly Yes, but only as the oral solution
What kind of treatment is dexketoprofen designed for? Cardiovascular prevention Acute, short-term pain Long-term treatment of osteoarthritis

Training content. It does not replace the summary of product characteristics or clinical judgement.

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