Have you ever had a hard time controlling your cholesterol, even though you've tried various medications, diet, and exercise? Sometimes it happens. This is especially a challenge when you have a family history of high cholesterol. Today, we're talking about a relatively new class of drugs that can help. These are called PCSK9 inhibitors.
What are these PCSK9 Inhibitors?
Simply put, these are powerful cholesterol-lowering drugs given as injections. They primarily target LDL cholesterol (Low-Density Lipoprotein Cholesterol) , the "bad cholesterol" that we all know as bad for our bodies. Doctors usually prescribe these drugs to people who have not had the desired results from other cholesterol medications, such as statins, or to people who have a family history of high cholesterol.
How does this medicine work inside the body?
To understand this, let's take a small example. Imagine that the bad cholesterol (LDL) in your blood is a type of garbage. To remove this garbage and clean the blood, our liver has a special "garbage can" on its surface. This is what we medically call LDL receptors . What these receptors do is capture the LDL cholesterol in the blood and take it into the liver to be destroyed.
Now here comes another one. That is a protein called PCSK9 . This is also produced by our liver. But the job of this PCSK9 protein is to destroy the LDL receptors (our garbage cans) that remove cholesterol. When the level of PCSK9 increases in the body, a lot of LDL receptors are destroyed. Then the removal of cholesterol from the blood decreases, and the cholesterol level in the blood increases.
So, what the PCSK9 inhibitor vaccine does is block that destructive PCSK9 protein and stop it from working. Then our LDL receptors are not destroyed, and they can work freely. The result is that more LDL cholesterol is removed from the blood, and cholesterol levels are significantly reduced. Very simple, right?
Who is this medicine recommended for?
This is not a one-size-fits-all medication. Your doctor will decide if this medication is right for you based on several factors.
| Status | Description |
|---|---|
| High cholesterol that is not controlled by other medications | If your LDL levels are still high despite taking the maximum dose of a statin and other cholesterol medications. |
| Hereditary high cholesterol conditions | People who have had very high cholesterol levels since childhood due to genetic conditions such as Familial Hypercholesterolemia. |
| For those at very high risk of heart disease | If you have already had a myocardial infarction or stroke, and the risk of such a condition occurring in the future is very high. |
How do I get this medicine?
These are given as an injection, not a pill. Depending on your doctor's recommendation, you will usually receive this injection in a hospital or clinic every few weeks or months. The two main types currently in use in Sri Lanka are Alirocumab (Praluent®) and Evolocumab (Repatha®) .
After starting this treatment, your doctor will perform regular blood tests and monitor your cholesterol levels to see how effective it is.
What are the benefits and side effects?
The main advantage of this drug is that it is very effective in reducing LDL cholesterol levels. According to some studies, they can reduce LDL levels by between 50% and 70% . This significantly reduces the risk of heart attack, stroke, and other heart diseases.
Although most people do not experience serious side effects, some may experience minor ones.
- Swelling, redness, or pain at the injection site
- Feeling tired (Fatigue)
- Muscle pain
- Cold-like symptoms
Very rarely, some people may experience some effects on their liver or kidney function. This is why it is very important to see your doctor regularly for checkups . If you experience any unusual symptoms, inform your doctor immediately.
Is it not enough to use just this medicine?
This is a very important question. The answer is, "No, not enough." PCSK9 inhibitors are not magic. They are just one part of an overall treatment plan.
Remember, controlling cholesterol isn't just about taking a pill. It's about changing your entire lifestyle.
While getting this vaccine, you should definitely take care of the following:
- A healthy diet: Eat less oil, sugar, and salt, and more fruits, vegetables, and foods high in fiber.
- Regular exercise: Engage in exercise such as walking or running for at least 30 minutes a day, at least 5 days a week.
- Stress management: Relaxing the mind through things like yoga and meditation.
- Adequate sleep: Get 7-8 hours of good sleep daily.
- Smoking cessation: Complete cessation of smoking and tobacco products.
You will get the best results from PCSK9 inhibitor therapy when you combine these lifestyle changes. Never stop taking the medication or change the dosage without your doctor's advice.
Take-Home Message
- PCSK9 inhibitors are a powerful type of injection used to lower high LDL cholesterol levels that are not controlled by other treatments.
- This protects the liver's LDL receptors and makes the process of removing cholesterol from the blood more efficient.
- This is a treatment that a doctor only recommends for specific cases (e.g., hereditary high cholesterol, high risk of heart disease).
- It is very important to maintain a healthy lifestyle while receiving this treatment.
- Continue this treatment only on your doctor's advice, maintaining regular contact with him.
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