Posle leka mi je bolje.

Posle means after.

In this sentence, posle is a preposition that requires the genitive case, which is why lek becomes leka.

• lek = medicine, remedy
• posle leka = after the medicine / after taking the medicine

This is a very common pattern in Serbian:

• posle ručka = after lunch
• posle škole = after school
• posle posla = after work

Because posle takes the genitive, and lek is a masculine noun whose genitive singular is leka.

So:

• nominative: lek
• genitive: leka

That is why you say:

• Posle leka = after the medicine

not:

• Posle lek ❌

Mi here means to me.

It is the short, unstressed dative form of ja:

• ja = I
• meni = to me
• mi = to me (short clitic form)

So mi je bolje literally means something like it is better to me, which in natural English becomes I feel better or I am better.

This dative structure is very common in Serbian for talking about states and feelings:

• Hladno mi je. = I am cold.
• Loše mi je. = I feel bad.
• Dobro mi je. = I feel good.

Je is the 3rd person singular present form of biti (to be).

In this kind of Serbian expression, the state is often expressed impersonally:

• mi je bolje
• literally: to me it is better

Even though English says I feel better, Serbian often uses this structure with je.

Compare:

• Dobro mi je. = I feel good.
• Bolje mi je. = I feel better.
• Loše mi je. = I feel bad.

So je is necessary here because the sentence is built around it is better to me.

Bolje means better, while dobro means good / well.

So:

• Dobro mi je. = I feel good / I’m fine.
• Bolje mi je. = I feel better.

Bolje is the comparative form of dobro:

• dobro = well
• bolje = better

So this sentence suggests an improvement in how the person feels, often compared to before taking the medicine.

Yes, that is a good literal breakdown:

• Posle leka = after the medicine
• mi = to me
• je = is
• bolje = better

So literally: After the medicine, to me it is better.

But in natural English, you would usually say:

• I feel better after the medicine.
• I’m better after taking the medicine.
• After the medicine, I feel better.

Because Serbian often does not need an explicit subject in this kind of expression.

The idea of I is understood through mi (to me). The sentence is not structured like I am better, but more like to me it is better.

So Serbian naturally says:

• Mi je bolje.

rather than requiring a separate ja.

You could add meni for emphasis:

• Meni je bolje. = I feel better. / As for me, I feel better.

But normally the short form mi is enough.

Yes. Both are possible, but they are used a little differently.

• Mi je bolje. = neutral, everyday phrasing
• Meni je bolje. = more emphasis, contrast, or stress

For example:

• Meni je bolje, ali njemu nije. = I feel better, but he doesn’t.

Usually, the short clitic mi is the most natural choice unless you want emphasis.

Yes, Serbian word order is fairly flexible, but not completely random.

Mi je is a clitic group, and clitics usually tend to appear near the beginning of the clause, often in second position. That affects the word order.

Natural versions include:

• Posle leka mi je bolje.
• Mi je bolje posle leka.
• Bolje mi je posle leka.

These can all work, but they differ slightly in emphasis.

Most neutral:

• Posle leka mi je bolje. = After the medicine, I feel better.

If you want to highlight the improvement:

• Bolje mi je posle leka.

So the sentence you were given is perfectly natural and emphasizes the time/circumstance first: after the medicine.

It can mean either, depending on context.

Posle leka literally means after the medicine, but in real usage it usually implies:

• after taking the medicine
• after the medicine started helping
• after using the medicine

Serbian often leaves that kind of detail unstated if it is obvious from context.

If you wanted to be more explicit, you could say:

• Posle uzimanja leka mi je bolje. = I feel better after taking the medicine.

But the original sentence sounds more natural in everyday speech.

Lek most commonly means medicine, remedy, or cure.

Depending on context, it can refer to:

• a medicine you take
• a remedy for a problem
• a cure in a broader sense

Examples:

• Ovaj lek pomaže. = This medicine helps.
• Nema leka za to. = There is no cure for that.

So in Posle leka mi je bolje, the most natural meaning is After the medicine, I feel better.

Yes, depending on the regional standard.

In Serbian, you may see:

• posle leka — common in Ekavian
• poslije lijeka — forms associated with Ijekavian

Also:

• lek / lijek

So the sentence may appear in different standard or regional forms, but the grammar is the same:

• Posle leka mi je bolje.
• Poslije lijeka mi je bolje.
• Poslije lijeka mi je bolje.

The meaning does not change.

It can be used for both, depending on context.

Most often with lek, it refers to physical condition:

• Posle leka mi je bolje. = I feel better after the medicine.

But the pattern mi je bolje is broader and can describe general well-being, including emotional state:

• Posle razgovora mi je bolje. = I feel better after the conversation.
• Posle odmora mi je bolje. = I feel better after resting.

So the structure itself is general; the noun lek makes this particular sentence sound medical or health-related.