Everything about Penicillin: Let's learn exactly about this medicine that doctors prescribe.

Have you ever gone to the doctor with a fever, cough, and sore throat and been given a medicine like "Amoxicillin"? Or have you ever been prescribed a medicine like "Penicillin" for a wound? Many of us have heard of this medicine, but we don't know exactly what it is, what it does to the body, or how it works, right? This is a truly amazing medicine that has revolutionized medicine and helped save millions of lives. So today, let's learn everything about penicillin in a very simple, conversational way.

What is Penicillin in simple terms?

Simply put, penicillin is a class of drugs called antibiotics . An antibiotic is a medicine that kills or stops the growth of harmful bacteria that enter our bodies. Think of the bad bacteria that enter our bodies as enemies that invade a country. Then penicillin is like a specially trained soldier who destroys those enemies.

This penicillin belongs to a large family of antibiotics called ``beta-lactams.`` Doctors use this medicine as a pill, a liquid, or as an ``intravenous'' (IV) injection.

What kind of illnesses do doctors use penicillin for?

Penicillin is a broad-spectrum antibiotic that can be used to treat a wide range of conditions. Your doctor will choose the right type of penicillin based on the type of infection you have. Here are some of the most common uses.

Are there types of penicillin?

Yes, there are different members of the penicillin family. They can be divided into several main groups based on how they are made and the types of bacteria they can kill.

• Natural penicillins: These are types that occur naturally, like in a tree. Scientists purify them and make them into medicines. Examples of this type are Penicillin G and Penicillin V.
• Semi-synthetic penicillins: These are the ones we see most often. Scientists take the natural penicillin and slightly modify its structure in the lab to make it more advanced and more potent. Drugs like Amoxicillin, Ampicillin, and Dicloxacillin belong to this category.
• Combination medications:Sometimes bacteria are very cunning. They find their own ways to escape from penicillin. At that time, to increase the power of penicillin even more, they add another auxiliary drug. For example, you may have heard of the drug ``(Augmentin)``. It has ``(Amoxicillin)`` and another drug ``(clavulanic acid)`` added to it.

How does this medicine work inside the body?

This is a very interesting process. Imagine that every bacterium has a strong cell wall to protect itself. Just like we have a wall around our house. Without this wall, bacteria cannot survive.

What penicillin does is it goes straight to stopping the bacteria from building the wall . It's like not letting the cement in when you're building a wall. When the wall doesn't build properly, it weakens, it gets holes, and after a while it breaks and falls apart. When the wall is gone, the bacteria can't live, it dies. That's just how it is.

So what does 'drug resistance' mean?

When faced with the same type of attack over time, some bacteria become very cunning. They learn new ways to escape this penicillin attack. For example:

• They produce enzymes (like beta-lactamase) that destroy penicillin.
• Or they change the nature of their defense wall, so that penicillin cannot enter.

We call this antibiotic resistance . This is the biggest health problem in the world today. MRSA (methicillin-resistant Staphylococcus aureus) is a type of bacteria that is resistant to many types of penicillin.

How long should I take penicillin? What are the side effects?

Your doctor will decide how long you need to take penicillin. It will depend on the type and severity of the infection you have. It can usually be from 5 to 7 days to several weeks.

Common side effects

Like all medications, penicillin can cause minor side effects. However, these don't occur in most people, and if they do, they are usually not serious.

• Nausea
• Vomiting
• Diarrhea (stomach upset)
• Sometimes a small skin rash may appear.
• Loss of appetite or change in sense of taste/smell
• Headache

Often, taking the medicine after a meal can reduce stomach discomfort such as nausea.

Things to be careful about when taking penicillin

Even though there are minor side effects, sometimes there can be serious risks. It is very important to be aware of this.

1. Penicillin Allergy

This is the most serious risk. But in reality, very few people are allergic to penicillin. Many people think they are allergic, but they may not be. But for someone who is actually allergic, this can be dangerous.

• Symptoms: skin rash, itching, swelling, vomiting, dizziness, and, in the most serious case, difficulty breathing.
• What to do: If you experience difficulty breathing, vomiting, swelling of the face or throat shortly after taking the medicine, it is an emergency. Go to the nearest hospital's Emergency Department (ETU) immediately.

2. C. diff infection

This is a bit complicated. We have a balance of good bacteria and bad bacteria in our gut. Antibiotics like penicillin sometimes kill off some of the good bacteria along with the bad bacteria. This allows the bad bacteria, called Clostridium difficile (C. diff), to multiply unchecked. This can cause severe, watery diarrhea, severe stomach cramps, and fever .

Who discovered this miracle drug?

This is a very surprising and accidental thing. In 1928, a scientist named Alexander Fleming went on vacation without properly cleaning some Petri dishes in his laboratory. When he returned, he saw that the dishes had grown mold, not bacteria, but dead ones. He realized that this mold was releasing some kind of chemical that killed the bacteria.

It was a very difficult task to isolate the bactericidal substance from that mold, purify it, and make it into a medicine. But it was eventually successful, and it came into public use by 1946. That discovery was the beginning of the penicillins we use today.