Why Do I Need So Many Tablets for Heart Failure?

By Dr Jodie-Ann Senior | Cardiologist & Heart Failure Specialist

You came home from your appointment with a prescription for four — maybe five — different medications.

And nobody properly explained why.

It's a really common reaction to come away wondering why so many medications? And to be concerned about side effects. Let’s face it…. Nobody really wants to have to take medications. But let’s just examine that very natural thought for a moment. In isolation, no one would take a medication. When you start weighing what those medications might do – save your life / give you a better chance at living well vs what might happen if you don’t take them…. It starts feeling a bit different. So, let’s discuss this more so you can understand the rationale for these medications.

The Short Answer

Heart failure is a complex condition involving multiple systems: your hormones, your nervous system, your fluid balance, and your kidneys — not just your heart muscle.

No single medication can address all of that. Each tablet you've been prescribed is targeting a different part of the problem.

This isn't over-prescribing, (although it might feel like it). It's guideline directed medical therapy.

The Four-Pillar Framework

Modern heart failure treatment is built around what cardiologists call this “guideline-directed medical therapy” — or GDMT. It's the combination of medications that large international trials have proven to extend life and reduce hospitalisation in heart failure.

Think of it as a four-legged stool. Each leg supports the structure in a different way. Remove one and it wobbles. All four together — and it holds. Each leg doesn’t just do it’s one job but it works in synergy with the other drugs. The combination produces a more powerful effect on heart failure survival.

This is quite different to when you are just treating blood pressure or cholesterol. In this instance, you are only giving enough medication to knock down a maker (say blood pressure reading) to a suitable level. In heart failure it’s more tricky – there aren’t quite these same markers to tell you instantaneously how you are tracking. The results occur over the longer term (sometimes months to years), and the studies show us that more is better. In blood pressure the goal is “just enough” to produce the result. In heart failure, the goal is to hit the types and doses of GDMT that reach the longer term goals – recovery and survival.ATIENT NOTE

PILLAR 1:Pillar 1 ACE inhibitor / ARB / ARNI

Ramipril, Perindopril, Candesartan, Sacubitril-Valsartan (Entresto)

Blocks the hormones that make your heart work harder than it needs to. Reduces strain, lowers blood pressure, and helps the heart recover over time.

Often started low and increased gradually. Cough is a side effect in 1-2% of ACE inhibitor use — there are alternatives.

PILLAR 2:Pillar 2 Beta-blocker

Carvedilol, Bisoprolol, Metoprolol succinate, Nebivolol

Slows and steadies the heart. Blocks adrenaline that would otherwise push a failing heart too hard. Improves survival.

You may feel more tired at first — this usually settles. Never stop suddenly without talking to your doctor.

PILLAR 3:Pillar 3 MRA

Spironolactone, Eplerenone, Finerenone (new non steroidal MRA)

Blocks aldosterone — a hormone that causes fluid and salt retention. Reduces fluid build-up and helps the heart muscle remodel.

Can raise potassium — regular blood tests are important. Also a mild diuretic.

PILLAR 4:Pillar 4 SGLT2 inhibitor

Dapagliflozin (Forxiga), Empagliflozin (Jardiance)

Originally a diabetes drug — now proven to reduce hospitalisation and death in heart failure. Removes excess glucose and fluid via the kidneys. Protects the heart and kidneys.

One of the more recent advances in heart failure treatment. Works regardless of whether you have diabetes.

DIURETICS Plus: Diuretic

Frusemide (Lasix), Bumetanide, Hydrochlorothiazide, Ethacrynic acid

Removes excess fluid from the body via the kidneys. Relieves breathlessness and swelling. Does not improve survival on its own — but makes you feel dramatically better.

This is the 'fluid tablet.' Dose may be adjusted based on your weight and symptoms.

What Each Pillar Does — In Plain English

Pillar 1: ACE Inhibitor / ARB / ARNI — Blocking the Hormone Strain

When your heart isn't pumping efficiently, your body responds with a stress response — releasing hormones, particularly angiotensin, that constrict your blood vessels and make your heart work harder.

In the short term, that's your body trying to compensate. In the long term, it accelerates damage.

This class of medication blocks that response. It relaxes your blood vessels, reduces the workload on your heart, and over time can allow the heart muscle to partially recover.

A dry cough is one of the more common side effects of the older ACE inhibitor type occurring in 1-2%of patients. If that's happening to you, mention it to your doctor — there are equally effective alternatives without this side effect.

Pillar 2: Beta-blocker — Protecting Against Adrenaline Overload

A struggling heart triggers your body to release adrenaline — to push it to pump harder. Again, helpful in the short term, acute setting, however more damaging over time.

Beta-blockers block adrenaline, the stress hormone at the heart. They slow and steady the heartbeat, reduce its workload, and protect the heart muscle from the ongoing stress of being over-driven.

In the early weeks, some people feel more tired or slightly dizzy. This usually settles as your body adjusts. Your doctor will typically start you on a low dose and increase gradually.

A note on recent news:

You may have seen recent headlines about the REBOOT trial suggesting beta-blockers don't work. That research looked specifically at patients who had a heart attack with preserved heart function — a different group to people with heart failure and reduced ejection fraction. If you have heart failure with a reduced ejection fraction, the evidence for beta-blockers remains strong and they continue to be a standard part of your treatment. If you're unsure which situation applies to you, it's worth asking your cardiologist at your next appointment.

Important: never stop a beta-blocker suddenly without speaking to your doctor first. Stopping abruptly can cause a rebound effect that places significant stress on the heart.

Pillar 3: MRA — Targeting Fluid at the Hormonal Level

Spironolactone and eplerenone belong to a class called mineralocorticoid receptor antagonists (MRAs).

They block a hormone called aldosterone, which causes your body to retain salt and fluid — adding to the work your heart has to do. MRAs reduce fluid retention, help protect the heart muscle from further scarring, and have been shown to improve survival.

Regular blood test monitoring is important with MRAs because they can raise potassium levels. This is routine and manageable — your care team will keep an eye on it.

Pillar 4: SGLT2 Inhibitor — The Diabetes Drug that Doubles as a Heart Failure Drug

Dapagliflozin (Forxiga) and empagliflozin (Jardiance) were originally developed to treat type 2 diabetes. Then researchers discovered something unexpected: heart failure patients taking them were living longer and being hospitalised less — regardless of whether they had diabetes.

These medications protect the heart and kidneys through mechanisms we are still fully characterising. They also have a mild diuretic effect because they act by getting more sugar and water to be excreted by the kidneys. They are now a standard part of heart failure treatment in Australia.

If your doctor has recently added one of these to your prescription, it reflects how much the evidence in this area has strengthened. It is one of the more recent advances in heart failure care.

The Diuretic: The One That Makes You Feel Better

Frusemide (Lasix) is the most commonly prescribed diuretic in heart failure. It removes excess fluid from the body via the kidneys — relieving breathlessness, reducing ankle and leg swelling, and making daily life significantly more comfortable.

Here is the important distinction: diuretics treat symptoms. They don't change the underlying disease or improve survival on their own. That's the job of the four pillars.

Your diuretic dose may be adjusted from time to time based on your weight and symptoms. This is normal fine-tuning, not a sign that your heart failure is deteriorating.

Why the Combination Works Better Than Any Single Tablet

Each pillar targets a different part of what's going wrong. The hormonal overload. The adrenaline response. The fluid retention. The kidney damage. No single medication addresses all of that.

The research is very clear on this point: patients who are on all four pillars of therapy do better — fewer hospital admissions, better quality of life, longer survival — than those on fewer medications.

Your cardiologist isn't giving you more tablets than necessary. They're giving you every tool that the evidence says works and together they are more effective than each alone.

Questions Worth Asking at Your Next Appointment

1.Am I on all four pillars of guideline-directed therapy?

2.If I'm not on one of them, is there a reason — and could that change?

3.Are my doses at the right level, or are we still titrating?

4.What blood tests do I need to monitor while on these medications?

5.What side effects should I watch for and report?

A Final Word

The medications you've been prescribed represent decades of research and tens of thousands of patients' outcomes. They exist because they have been proven — rigorously — to help people with heart failure live longer and feel better.

Understanding why you're taking them doesn't make you a doctor. It makes you an informed, empowered patient. And that matters.

📋 Free downloads:

💚 Heart Failure Tracking Kit (The Four Zones™ weight & symptom action plan): https://www.hftk.drjodieannsenior.com

📄 My Heart Failure Stage — Personal Reference Guide (includes GDMT questions): https://www.hfsg.drjodieannsenior.com

▶️ Watch the video version:

📖 More: drjodieannsenior.com/blog

Aligned with the NHFA/CSANZ 2018 Guidelines for the Prevention, Detection and Management of Heart Failure in Australia.

This article is for educational purposes only. It is not a substitute for individual medical advice from your own healthcare team.

Heart Failure