Medicine guide

Naproff

On the Bulgarian pack: Напрофф 550 mg филмирани таблетки

550 mg · film - coated tablets

  • Prescription only
  • Muscles, joints and bones
Active substance
Naproxen
Made by
World Medicine Europe EOOD

Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.

What it is for

Medicine groupMuscles, joints and bonesM01AE

Mediclarum has not yet read the official leaflet for this product. The exact uses and dose are in the leaflet inside the pack. Open the official leaflet

How it works

This product’s leaflet is published as a scanned document. This section quotes the US prescribing label for the same active substance (naproxen). It describes the substance, not this Bulgarian product — its uses and doses can differ.

Naproxen has analgesic, anti-inflammatory, and antipyretic properties.

Naproxen sodium has been developed as a more rapidly absorbed formulation of naproxen for use as an analgesic.

Half-life12–17 h
Mostly cleared after≈ 3 daysfive half-lives — our arithmetic
How the body breaks it down

Naproxen is extensively metabolized in the liver to 6-0-desmethyl naproxen, and both parent and metabolites do not induce metabolizing enzymes.

How it leaves the body

Approximately 95% of the naproxen from any dose is excreted in the urine, primarily as naproxen (<1%), 6-0-desmethyl naproxen (<1%) or their conjugates (66% to 92%).

Quoted from the prescribing label, sections “Mechanism of Action” and “Pharmacokinetics”. DailyMed · 2026-05-19

Safety of the active substance

This product’s leaflet is published as a scanned document. This section quotes the US prescribing label for the same active substance (naproxen). It describes the substance, not this Bulgarian product — its uses and doses can differ.

Serious warning

WARNING: RISK OF SERIOUS CARDIOVASCULAR AND GASTROINTESTINAL EVENTS Cardiovascular Thrombotic Events.

Must not be used by
  • Naproxen tablets and naproxen sodium tablets are contraindicated in the following patients:.
  • Known hypersensitivity (e.g., anaphylactic reactions and serious skin reactions) to naproxen or any components of the drug product [ see Warnings and Precautions ( 5.7, 5.9 ) ].
  • History of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs.
  • Severe, sometimes fatal, anaphylactic reactions to NSAIDs have been reported in such patients [ see Warnings and Precautions ( 5.7, 5.8 ) ].
Most common side effects

Most common adverse reactions to naproxen were dyspepsia, abdominal pain, nausea, headache, rash, ecchymosis, and edema.

Quoted from the US prescribing label for the same active substance. Your own pack’s leaflet is the authority for your product. DailyMed

Same active substance, strength and form in other countries

Matched on active substance, strength and kind of form only. This is not a statement that the products are equivalent or interchangeable: other ingredients, release and approved uses can differ — ask a pharmacist before swapping.

Medicine passport: one printable page to show a pharmacist abroad

NetherlandsNo exact match for this strength and form

Details

Made byWorld Medicine Europe EOOD · Bulgaria
Active substanceNaproxen
Used inMuscles, joints and bones
Strength550 mg
Formfilm - coated tablets
Pack sizes10 · 20
ClassificationM01AE · Muscles, joints and bones
Name in the registerНапрофф 550 mg филмирани таблетки
Reg. no.20230168

Source: Bulgarian Drug Agency register · 2026-08-01 · not reviewed by a clinician

Източник: Изпълнителна агенция по лекарствата (ИАЛ). The publisher’s terms do not grant reproduction, so text is shortened and linked. Publisher’s terms.

Same active substance

These contain the same substance. That does not mean one can replace another — ask a pharmacist.