Το σιρόπι για τον βήχα είναι πικρό, αλλά το χάπι με βοηθάει πιο γρήγορα.

Because both σιρόπι and χάπι are neuter singular nouns in Greek.

• το σιρόπι = the syrup
• το χάπι = the pill

A very common pattern is that nouns ending in -ι are neuter, so they usually take το in the singular.

The adjective has to agree with the noun it describes in gender, number, and case.

Here, σιρόπι is:

• neuter
• singular
• nominative

So the adjective must also be neuter singular nominative:

• πικρός = masculine
• πικρή = feminine
• πικρό = neuter

So Το σιρόπι είναι πικρό means The syrup is bitter.

Because βήχας is a masculine noun, not a neuter one.

Its dictionary form is:

• ο βήχας = the cough

After the preposition για, Greek uses the accusative case, so:

• ο βήχας → τον βήχα

So:

• για τον βήχα = for the cough

This is why you see τον, not το.

This is a case change.

The noun βήχας is in the nominative in its basic form:

• ο βήχας

But after για, it goes into the accusative:

• τον βήχα

For many masculine nouns ending in -ας, the accusative singular drops the final -ς.

So:

• nominative: ο βήχας
• accusative: τον βήχα

Yes. In this sentence, για means for.

So:

• σιρόπι για τον βήχα = syrup for cough / cough syrup

More literally, it is syrup for the cough.

Greek για can have other meanings in other contexts, such as about or intended for, but here for is the natural meaning.

Here με means me, not with.

That is a very common learner question because με can be:

• a preposition meaning with
• a weak object pronoun meaning me

In this sentence, it is the pronoun:

• το χάπι με βοηθάει = the pill helps me

So με is the object of the verb βοηθάει.

Because weak object pronouns in Greek usually come before the finite verb.

So Greek says:

• με βοηθάει = helps me

not normally:

• βοηθάει με

This pre-verbal position is very normal for pronouns like:

• με = me
• σε = you
• τον / τη / το = him / her / it

If you want extra emphasis, Greek can use a strong form too, such as εμένα, but the neutral everyday wording is με βοηθάει.

Yes. In everyday Greek, βοηθάει and βοηθά are both used for he/she/it helps.

So these are both possible:

• Το χάπι με βοηθάει
• Το χάπι με βοηθά

The version with -άει is very common in speech and writing. A learner should recognize both forms.

Because πιο γρήγορα is the comparative adverb phrase meaning more quickly or faster.

• γρήγορα = quickly
• πιο γρήγορα = more quickly / faster

So:

• το χάπι με βοηθάει πιο γρήγορα = the pill helps me faster / more quickly

Greek often forms comparisons with:

• πιο + adjective/adverb

Yes. Both are natural.

You can say:

• πιο γρήγορα
• γρηγορότερα

Both mean faster / more quickly.

The sentence uses πιο γρήγορα, which is a very common and straightforward way to form the comparative.

Greek, like English, can leave the comparison understood from context.

Here πιο γρήγορα probably means something like:

• faster than the syrup
• faster than before
• more quickly in general

If you want to state the comparison explicitly, you could add από:

• Το χάπι με βοηθάει πιο γρήγορα από το σιρόπι.
• The pill helps me faster than the syrup.

So the original sentence is completely natural even without saying the full comparison.

Yes. Greek word order is more flexible than English word order.

The sentence as given is neutral and natural:

• Το σιρόπι για τον βήχα είναι πικρό, αλλά το χάπι με βοηθάει πιο γρήγορα.

But Greek could reorder parts for emphasis. For example, if you wanted to focus more on the pill, you might place that clause first. The meaning stays similar, but the focus changes.

Still, for a learner, the original order is a very good basic model to follow.