What is Natrilix SR?
Natrilix SR is a prolonged-release tablet that you take once a day. It’s commonly prescribed for high blood pressure (hypertension), but it can also be used to treat swelling caused by fluid buildup in your tissues, known as oedema.
High blood pressure is very common and affects more than one billion people worldwide [1]. It’s a condition where the force of blood against the walls of your arteries is consistently too high. This can put extra strain on your heart and blood vessels, increasing the risk of serious health problems like heart disease, stroke and kidney problems. Which is why it’s important to monitor and manage your blood pressure to keep it within a healthy range and reduce the risk of complications.
Hypertension is typically defined as a reading of 140/90mmHg or higher (or an average of 135/85mmHg at home). If you’re over 80, the threshold is usually set at 150/90mmHg (or an average of 145/85mmHg at home).
The readings taken at home are sometimes lower than those taken at the doctor’s office because of something called “white coat syndrome”. This is when the anxiety of being in a doctor’s surgery causes your blood pressure to rise. But if your blood pressure is normal at home, don’t worry, you don’t need treatment for high blood pressure.
On the other hand, ideal blood pressure is usually considered to be between 90/60mmHg and 120/80mmHg. For people over 80 years old, the target is to keep it below 150/90mmHg (or 145/85mmHg at home).[2]
How does Natrilix SR work?
Natrilix SR is a prolonged-release tablet containing indapamide as its active ingredient. Indapamide is a medication that belongs to a class of drugs called thiazide-like diuretics. Diuretics (or “water pills”) work by helping your kidneys remove excess water and salt from your body through urine. By doing so, they lower the volume of fluid in your blood vessels, which reduces the pressure on the walls of your arteries. This helps to lower and control high blood pressure.
But indapamide is somewhat different from other diuretics in that it doesn’t make you urinate a lot.[4] This is beneficial because it allows your body to retain ions like potassium — you need potassium ions for your body to maintain a normal heartbeat and for your heart muscle to work properly.
Indapamide also works by relaxing your blood vessels, so that blood passes through more easily. This lowers blood pressure further.[3]
What doses of Natrilix SR are there?
Natrilix SR only comes in one strength: Natrilix SR 1.5mg. Each tablet contains 1.5mg indapamide.
Typically, you take one tablet once a day. It’s important to follow your clinician’s advice and continue taking it for as long as they tell you to. Treatment for hypertension is usually life-long.
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