La farmacia está demasiado lejos, así que voy a otra farmacia.

In Spanish, articles are used more often than in English. When talking about a specific place or thing in the situation, Spanish usually prefers the + noun.

So La farmacia está demasiado lejos sounds natural for The pharmacy is too far away.

If you said just Farmacia está demasiado lejos, it would sound incomplete or unnatural in normal Spanish.

Spanish uses estar for location and for temporary states, while ser is used for identity, origin, and more permanent characteristics.

Here, la farmacia está demasiado lejos uses estar because it is talking about location: where the pharmacy is in relation to the speaker.

A useful rule:

• ser = what something is
• estar = where something is / how something is

So:

• La farmacia es grande = The pharmacy is big
• La farmacia está lejos = The pharmacy is far away

Both can mean something like very far, but they are not exactly the same.

• muy lejos = very far
• demasiado lejos = too far

Demasiado adds the idea that the distance is excessive or inconvenient. In this sentence, that matters because it explains why the speaker goes somewhere else.

So:

• Está muy lejos = It is very far
• Está demasiado lejos = It is too far

Because demasiado is modifying lejos. It works like an adverb here, meaning too.

So the structure is:

• demasiado
  • adverb/adjective

Examples:

• demasiado lejos = too far
• demasiado tarde = too late
• demasiado caro = too expensive

That is the normal word order.

Así que means so, therefore, or so then. It introduces the result or consequence of the first part.

In this sentence:

• La farmacia está demasiado lejos = reason/situation
• así que voy a otra farmacia = result

It is similar to:

• por eso = for that reason / that’s why
• entonces = then / so

But así que is a very natural connector for everyday speech.

Because the sentence joins two complete ideas:

• La farmacia está demasiado lejos
• voy a otra farmacia

In Spanish, it is normal to put a comma before connectors like así que when they link clauses like this.

So the comma helps show the pause and the logical connection: The pharmacy is too far, so I’m going to another pharmacy.

Because the verb ir normally uses the preposition a to show destination.

So:

• voy a casa = I’m going home
• voy al supermercado = I’m going to the supermarket
• voy a otra farmacia = I’m going to another pharmacy

Without a, the sentence would be incorrect.

Otra farmacia means another pharmacy. It refers to an unspecified different pharmacy.

• otra farmacia = another pharmacy
• la otra farmacia = the other pharmacy

So in this sentence, the speaker is not talking about one particular known alternative. They just mean a different pharmacy.

Also, in Spanish, otro/otra usually does not take an indefinite article before it:

• otra farmacia, not una otra farmacia

Because farmacia is a feminine noun.

Adjectives and words like otro/otra must agree with the noun in gender and number:

• otro supermercado
• otra farmacia
• otros supermercados
• otras farmacias

Even though farmacia ends in -a, this is one of the common cases where the ending matches the feminine gender in the usual way.

Yes, but yo is not necessary here.

Spanish often leaves out subject pronouns because the verb ending already shows who the subject is:

• voy = I go / I’m going

So voy a otra farmacia is the most natural default form.

You would add yo only for emphasis, contrast, or clarity, for example:

• Yo voy a otra farmacia, pero tú puedes ir a esa. = I’m going to another pharmacy, but you can go to that one.

It is grammatically present tense, but in Spanish the simple present often translates into English as either:

• I go
• I am going

Here, because of the context, voy a otra farmacia is most naturally understood as I’m going to another pharmacy.

Spanish uses the simple present much more often than English for near-future or current actions.

Yes, and it changes the nuance slightly.

• voy a otra farmacia = I’m going to another pharmacy
• me voy a otra farmacia = I’m leaving and going to another pharmacy

Me voy adds the idea of departure, of going away from the current place or situation. In many contexts, it sounds a bit stronger.

In your sentence, voy a otra farmacia is perfectly natural and straightforward.

Mostly yes, but there is a cultural note.

In Spain, farmacia is the shop where you buy medicine and related products, and where a licensed pharmacist works. In British English, this can often be translated as chemist’s or pharmacy. In American English, pharmacy is the usual word.

So the Spanish word is straightforward, but the exact everyday English equivalent can vary depending on the variety of English.

No, not in this sentence structure, because porque means because, not so.

Compare:

• La farmacia está demasiado lejos, así que voy a otra farmacia. = The pharmacy is too far, so I’m going to another pharmacy.

• Voy a otra farmacia porque la farmacia está demasiado lejos. = I’m going to another pharmacy because the pharmacy is too far away.

Both sentences express a similar idea, but the connector changes the direction of the logic:

• así que introduces the result
• porque introduces the reason

No, because lejos is an adverb here, not an adjective that agrees in gender or number.

Adverbs do not agree with nouns:

• está lejos
• están lejos

Lejos stays the same.

By contrast, adjectives do agree:

• la farmacia es grande
• las farmacias son grandes

So lejos remains unchanged no matter what noun or subject you use.