Lokalbedøvelsen virker hurtigt.

Danish, like English, often forms nouns by combining smaller words into one compound noun.

• lokal = local
• bedøvelse = anesthesia / numbing

So lokalbedøvelse means local anesthesia or local anesthetic.

This is very common in Danish. English sometimes writes similar ideas as separate words, but Danish often joins them:

• tandlæge = dentist
• sygehus = hospital
• lokalbedøvelse = local anesthesia

The ending -n makes the noun definite, like the in English.

• en lokalbedøvelse = a local anesthetic / a local anesthesia
• lokalbedøvelsen = the local anesthetic / the local anesthesia

In Danish, the definite article is often attached to the end of the noun instead of being a separate word.

Because bedøvelse is a common-gender noun (it takes en), its definite form is made with -en:

• en bedøvelse → bedøvelsen
• en lokalbedøvelse → lokalbedøvelsen

Virker is the present tense of virke, which often means:

• to work
• to have an effect
• sometimes to seem

In this sentence, virker means works or takes effect.

So it is not about something appearing a certain way; it is about the anesthetic having its effect.

Examples:

• Medicinen virker. = The medicine works.
• Det virker hurtigt. = It works quickly.
• Han virker træt. = He seems tired.
  (Here virker has a different meaning: seems.)

Danish does not use do/does the way English sometimes does, and this sentence does not need a separate helping verb.

English:

• The local anesthetic works quickly.

Danish:

• Lokalbedøvelsen virker hurtigt.

The verb virker already carries the present tense meaning, so no extra word is needed.

Hurtigt is the adverb form of hurtig.

• hurtig = quick / fast (adjective)
• hurtigt = quickly / fast (adverb)

In this sentence, it describes how the anesthetic works, so Danish uses the adverb form:

• virker hurtigt = works quickly

Compare:

• en hurtig behandling = a quick treatment
  (hurtig describes a noun)
• Behandlingen virker hurtigt. = The treatment works quickly
  (hurtigt describes the verb)

A very common pattern in Danish is:

• adjective: hurtig
• adverb: hurtigt

Yes. This is standard Danish main-clause word order:

Subject + verb + adverb

• Lokalbedøvelsen = subject
• virker = verb
• hurtigt = adverb

So:

• Lokalbedøvelsen virker hurtigt.

This is very similar to normal English word order:

• The local anesthetic works quickly.

A learner-friendly approximation is:

lo-KAHL-beh-DOH-vuhl-sen

A few pronunciation notes:

• lokal has stress on the second syllable: lo-KAL
• ø is a rounded vowel that does not exist naturally in English; it is somewhat like the vowel in French deux or German schön
• bedøvelse is pronounced smoothly, with the middle vowels reduced a bit in natural speech
• the final -sen is usually lighter than an English speaker might expect

If you want to sound more natural, focus especially on:

• the ø sound in bedøvelse
• not pronouncing every syllable too heavily

A rough guide:

• virker ≈ VEER-ger or VEER-ker
• hurtigt ≈ HOOR-tit or HUR-tit, depending on accent and speech style

Useful notes:

• The Danish r often affects nearby vowels and is not always pronounced like a strong English r
• The ending -igt in hurtigt is not pronounced exactly as it is spelled by beginners; in many accents it sounds closer to -it

So virker hurtigt may sound more compressed and smoother than an English speaker expects.

Because it is an adverb modifying the verb virker.

In simple Danish clauses, adverbs of manner like hurtigt often come after the verb:

• Han løber hurtigt. = He runs quickly.
• Medicinen virker hurtigt. = The medicine works quickly.

This placement is very natural and matches English fairly closely.

Yes, but it is slightly different in form and style.

• lokalbedøvelsen = the local anesthesia / the local anesthetic
• den lokale bedøvelse = the local anesthesia / the local anesthetic

Both can be correct, but lokalbedøvelse as a compound noun is very natural in medical Danish.

The version with den lokale bedøvelse uses:

• den = the
• lokale = local
• bedøvelse = anesthesia / numbing

This is the separate adjective + noun structure, while lokalbedøvelse is the compound noun structure.

In many contexts, the compound sounds more fixed and technical.

Yes. Virker is present tense.

• virke = to work / to take effect
• virker = works / is working

So the sentence means that the anesthetic works quickly or takes effect quickly.

Other forms:

• virkede = worked
• har virket = has worked / has taken effect
• vil virke = will work

Yes, depending on context, Danish lokalbedøvelse can refer to:

• the local anesthetic itself
• the local anesthesia as a medical intervention

That is similar to English, where people may talk about:

• a local anesthetic
• local anesthesia

In this sentence, the exact English wording depends on context, but the Danish itself is perfectly natural either way.

No, not in the same way. Danish verbs are much simpler in this respect.

For the present tense, the verb form stays the same regardless of the subject:

• jeg virker
• du virker
• han virker
• vi virker

So unlike English, Danish does not add a special -s for he/she/it.

That means virker is used with lokalbedøvelsen just as it would be with many other subjects.