Hammastahna on loppu, ja uusi hammastahna täytyy ostaa apteekista tänään.

The toothpaste is finished, and new toothpaste has to be bought from the pharmacy today.

Breakdown of Hammastahna on loppu, ja uusi hammastahna täytyy ostaa apteekista tänään.

• olla: to be
• uusi: new
• ja: and
• tänään: today
• ostaa: to buy
• -sta: from
• täytyä: to have to
• apteekki: the pharmacy
• loppu: finished
• hammastahna: the toothpaste

Questions & Answers about Hammastahna on loppu, ja uusi hammastahna täytyy ostaa apteekista tänään.

Why is hammastahna written as one word?

Because Finnish forms compounds very freely, and they are usually written as a single word.

• hammas = tooth
• tahna = paste

So hammastahna is literally tooth-paste, written as one compound noun. This is very common in Finnish:

• hammasharja = toothbrush
• hammaslääkäri = dentist
• kahvikuppi = coffee cup

The last part usually tells you what kind of thing it is. So hammastahna is a kind of tahna.

What does on loppu mean here? Why isn’t it on loppunut?

On loppu is a very common Finnish expression meaning is finished, is gone, or has run out.

So:

• Hammastahna on loppu = The toothpaste is finished / We’re out of toothpaste

Why not on loppunut?

• on loppu describes the current state
• on loppunut describes the event/process of running out a bit more directly

Both can be correct, but on loppu is extremely natural for everyday things like food, soap, batteries, shampoo, toothpaste, etc.

Compare:

• Maito on loppu. = The milk is gone.
• Maito on loppunut. = The milk has run out.

The difference is small, but on loppu often feels more idiomatic in this kind of situation.

Why is there no word for the or a?

Finnish has no articles, so there is no separate word for the or a/an.

That means:

• hammastahna can mean toothpaste, the toothpaste, or sometimes a toothpaste
• uusi hammastahna can mean new toothpaste or a new toothpaste

The exact meaning comes from context.

In this sentence:

• Hammastahna on loppu is naturally understood as the toothpaste / our toothpaste is gone
• uusi hammastahna is understood as new toothpaste or a new tube of toothpaste

English needs articles; Finnish usually doesn’t.

Why is it uusi hammastahna, not uuden hammastahnan?

This is because of how objects work with necessity expressions like täytyy.

In a normal sentence with a personal verb, you would often get:

• Ostan uuden hammastahnan. = I will buy the new/newly needed toothpaste.

But with täytyy + infinitive, a total object is typically in the nominative, not the genitive:

• Täytyy ostaa uusi hammastahna. = A new toothpaste has to be bought / We need to buy new toothpaste.

So in your sentence:

• uusi hammastahna is correct

This is a very common pattern:

• Minun täytyy lukea kirja.
• not Minun täytyy lukea kirjan.

Could it be uutta hammastahnaa instead?

Yes, but that would change the nuance.

• uusi hammastahna = a whole new toothpaste item/tube; a total object
• uutta hammastahnaa = some new toothpaste; more indefinite or partial

So:

• Täytyy ostaa uusi hammastahna = We need to buy a new tube/package of toothpaste.
• Täytyy ostaa uutta hammastahnaa = We need to buy some new toothpaste.

In everyday life, when talking about replacing an empty tube, uusi hammastahna is very natural.

Why is ostaa in the infinitive?

Because täytyy is followed by the first infinitive of the main verb.

So:

• täytyy ostaa = must buy / has to be bought
• täytyy mennä = must go
• täytyy tehdä = must do

In Finnish, this structure is normal:

• Minun täytyy ostaa...
• Täytyy ostaa...

Even though English may translate this as must be bought, Finnish does not need a passive form here. The infinitive ostaa is exactly what you expect after täytyy.

Who has to buy it? Why is there no subject like we or I?

Finnish often leaves the doer unstated when it is obvious or unimportant.

So uusi hammastahna täytyy ostaa means something like:

• a new toothpaste needs to be bought
• we need to buy new toothpaste
• someone needs to buy new toothpaste

The sentence focuses on the necessity, not on who exactly does it.

This is very normal in Finnish. Context usually tells you whether the speaker means I, we, or some general person.

How does täytyy work? Can I say minä täytyy?

No. You do not say minä täytyy.

If you want to say who has to do something, Finnish uses the genitive form:

• minun täytyy = I have to
• sinun täytyy = you have to
• meidän täytyy = we have to

Examples:

• Minun täytyy ostaa hammastahnaa.
• Meidän täytyy lähteä.

So täytyy itself does not change like an ordinary personal verb in this use. In your sentence, the person is simply omitted.

Why is it apteekista and not apteekkiin or apteekissa?

Because with verbs like ostaa (to buy), Finnish often marks the source with -sta / -stä.

• apteekista = from the pharmacy
• apteekkiin = to the pharmacy
• apteekissa = in / at the pharmacy

So:

• ostaa apteekista = buy from the pharmacy

This is very natural Finnish.

Compare:

• Ostan lääkettä apteekista. = I’m buying medicine from the pharmacy.
• Menen apteekkiin. = I’m going to the pharmacy.
• Olen apteekissa. = I’m at the pharmacy.

English often says buy at the pharmacy, but Finnish usually uses from in this kind of sentence.

Why is uusi hammastahna placed before täytyy ostaa?

Finnish word order is more flexible than English word order.

The most neutral version might be something like:

• Ja uusi hammastahna täytyy ostaa apteekista tänään.
• Ja tänään täytyy ostaa uusi hammastahna apteekista.
• Ja täytyy ostaa uusi hammastahna apteekista tänään.

All of these are possible, with slightly different emphasis.

In your sentence, putting uusi hammastahna early helps connect it to the previous clause:

• Hammastahna on loppu → now we talk about the new toothpaste

So the word order highlights the thing that is now relevant.

Why is hammastahna repeated in the second clause?

Because repeating the noun is often the clearest and most natural option.

Finnish could sometimes omit it if the context is obvious, but repetition is very normal:

• Hammastahna on loppu, ja uusi hammastahna täytyy ostaa...

This sounds clear and natural.

If you said only:

• ...ja uusi täytyy ostaa

that could work in context, but it is less explicit and may sound a bit abrupt. Repeating hammastahna makes the sentence easy to understand.

Could I say Hammastahna on lopussa instead?

Yes, but the meaning changes a little.

• on loppu = completely gone / finished
• on lopussa = at its end / running out / nearly finished

So:

• Hammastahna on loppu. = The toothpaste is gone.
• Hammastahna on lopussa. = The toothpaste is running out / nearly gone.

In everyday speech, lopussa can sometimes be used loosely, but the usual contrast is:

• loppu = no more left
• lopussa = almost finished or in its final stage

Why is there a comma before ja?

Because ja is joining two independent clauses, each with its own finite verb.

Clause 1:

• Hammastahna on loppu
  • finite verb: on

Clause 2:

• uusi hammastahna täytyy ostaa apteekista tänään
  • finite verb: täytyy

In Finnish, when coordinating full clauses with ja, a comma is normally used.

But if ja just connects words or short phrases, there is usually no comma:

• kahvia ja teetä = coffee and tea
• uusi ja kallis hammastahna = new and expensive toothpaste

Why is tänään at the end? Can it go somewhere else?

Yes, tänään can move.

Finnish adverbs of time are quite flexible in position, and the choice often affects emphasis rather than basic meaning.

All of these are possible:

• ...täytyy ostaa apteekista tänään
• ...täytyy tänään ostaa apteekista
• Tänään täytyy ostaa uusi hammastahna apteekista

Putting tänään at the end is perfectly natural. It often gives the sentence a neat final time focus: this needs to happen today.