- Heart failure with reduced ejection fraction (HFrEF) is one of the most treatment-responsive serious cardiac conditions in modern medicine, the treatments available today can genuinely transform outcomes.
- Quadruple therapy, four medication classes working together, is the current gold standard and is supported by the strongest evidence in heart failure medicine.
- Each of the four medications targets a different pathway. Their benefits are additive, all four together is more powerful than any combination of fewer.
- Getting to target doses matters as much as being on the medications. Low-dose therapy provides partial benefit only.
- Weighing yourself daily is one of the simplest and most impactful things you can do, a sudden weight gain of more than 2kg in 48 hours is an early warning sign that needs prompt action.
- If you have HFrEF, actively asking your team whether you are on all four medications and at target doses is one of the most important questions you can ask.
I want to start by saying something about the name. “Heart failure” is a term I have always found unfortunate, it sounds final, catastrophic, like something that cannot be recovered from. In my experience, it frightens patients in a way that does not reflect the reality of what modern treatment can achieve.
The truth is that heart failure with reduced ejection fraction is now one of the most treatment-responsive conditions in all of cardiovascular medicine. We are not managing a decline. We are actively treating a condition, and in many patients, with the right medications at the right doses, we see genuine improvement in heart function, symptoms, and quality of life.
The story of heart failure medicine over the past two decades is a remarkable one. And the most important chapter in that story right now is quadruple therapy.
Understanding the Condition
What reduced ejection fraction means
The heart’s job is to pump blood around the body. Ejection fraction is the percentage of blood in the left ventricle, the main pumping chamber, that is pushed out with each beat. A healthy ejection fraction is typically 55% or above.
In heart failure with reduced ejection fraction (HFrEF), the left ventricle has become weakened and contracts less effectively, with an ejection fraction below 40%. The body compensates with hormonal changes that, over time, make things worse rather than better. This is the pathway that the four medications in quadruple therapy are specifically designed to interrupt.
One of the questions I hear most often is: “If my ejection fraction is 55%, does that mean 45% of my blood isn’t being pumped?” The answer is no, and it’s a really important distinction to understand. The heart never empties completely. A normal ejection fraction of 55–65% is exactly what a healthy heart achieves. This video explains what normal heart function looks like and what ejection fraction actually means.
What it feels like
Breathlessness on exertion or at rest, fatigue, ankle swelling, and reduced exercise tolerance are the most common symptoms. Some people wake breathless at night, or find they need extra pillows to sleep comfortably, both signs that fluid is accumulating.
These symptoms reflect what happens when the heart isn’t pumping as efficiently as it should. The encouraging thing is that effective treatment often meaningfully improves them, sometimes dramatically.
The Four Pillars of Treatment
Current international guidelines recommend that all eligible patients with HFrEF should be on four medication classes, each independently proven to reduce mortality and hospitalisation, and together more powerful than any combination of fewer.
| Medication class | What it does | Common examples |
|---|---|---|
| ARNI / ACE inhibitor / ARB | Blocks stress hormones that damage the heart, promotes recovery and reverse remodelling. Entresto (sacubitril/valsartan) has superior outcomes to ACE inhibitors alone in eligible patients. | Entresto, ramipril, candesartan |
| Beta-blocker | Slows the heart rate, reduces workload, and protects against sudden cardiac death from arrhythmia | Carvedilol, bisoprolol, metoprolol |
| MRA (mineralocorticoid receptor antagonist) | Blocks aldosterone, reduces fluid retention, fibrosis, and the scarring that drives further deterioration | Spironolactone, eplerenone |
| SGLT2 inhibitor | Originally a diabetes medication, now proven to reduce heart failure hospitalisations and cardiovascular death in HFrEF regardless of diabetes status | Empagliflozin (Jardiance), dapagliflozin (Forxiga) |
I always explain to patients that these four medications are not alternatives, they are not a menu to choose from. Each targets a different pathway driving heart failure progression. The evidence is for all four together, and the benefit of the combination is greater than the sum of its parts.
Why Target Doses Matter
Being prescribed a medication is only the first step. The clinical trials that proved the survival benefits of these drugs did so at or near guideline-recommended target doses, not at the lowest dose that was tolerated on day one.
A beta-blocker at a quarter of the target dose, or an ARNI at the starting dose months after initiation, provides a fraction of the achievable benefit. The traditional “go low and go slow” approach to starting these medications makes good sense, but it must be followed by systematic up-titration toward target.
This is why dedicated heart failure services exist. Specialist nurses and pharmacists working alongside cardiologists can actively manage dose increases between clinic visits, monitor blood pressure and kidney function at each step, and reach target doses more efficiently than is possible in general practice alone. If you have HFrEF and are not currently under a heart failure service, asking for a referral is entirely reasonable.
What You Can Do at Home
Daily weighing, simple and genuinely impactful
Weigh yourself every morning at the same time, before breakfast, after using the bathroom, wearing similar clothing. Record the number. If your weight rises by more than 2 kilograms within 48 hours, contact your heart failure team promptly.
This isn’t just a monitoring exercise. It is one of the most effective early warning systems in heart failure management, catching fluid retention before it becomes a hospitalisation. A simple set of bathroom scales, used consistently, is one of the most powerful tools available to you.
Exercise, more beneficial than many patients expect
Regular moderate exercise, as tolerated, improves exercise capacity, symptoms, and quality of life in heart failure. Cardiac rehabilitation programmes designed specifically for heart failure patients are available in most centres and are well worth pursuing. The evidence for exercise is strong, the instinct to rest and limit activity is understandable, but in most stable patients it works against recovery.
A word on fluid restriction
You may have been told to restrict fluids. It is worth knowing that the evidence base for strict fluid restriction in heart failure is actually quite limited, the data does not strongly support it in most stable patients. My own practice is not to advocate rigid fluid restriction routinely, though I always encourage patients to discuss this with their own team and follow their specific advice. What matters most is the daily weight, that tells you far more than a fluid target.
Other practical steps
Take medications consistently
At the same time each day. Never stop or reduce doses without speaking to your team first.
Avoid alcohol
Alcohol directly depresses heart muscle function. Avoiding it is one of the most direct things you can do.
Get vaccinated
Annual flu vaccine and pneumococcal vaccination are recommended, respiratory infections are a common trigger for acute decompensation.
Weigh daily
Same time, same conditions every morning. More than 2kg in 48 hours, call your team. This is your most important home monitoring tool.
Exercise regularly
Moderate activity as tolerated. Cardiac rehab programmes designed for heart failure patients are highly recommended.
Know your warning signs
Worsening breathlessness, rapid weight gain, increasing ankle swelling, contact your team promptly rather than waiting for the next appointment.
- Am I on all four medication classes for HFrEF, and if not, is there a clinical reason?
- Am I at or near the target dose for each medication, and is there a plan to increase them?
- Should I be under a dedicated heart failure service or clinic?
- What is my current ejection fraction, and has it changed since I started treatment?
- Am I eligible for cardiac rehabilitation?
Free Download, Heart Matters
Our Understanding Heart Failure guide includes a daily weight log, medication record, and symptom tracker, designed to bring to appointments and help you stay on top of your monitoring at home.
Heart Matters Resource
When in Doubt, Get Checked Out
If your symptoms are worsening, increasing breathlessness, rapid weight gain, ankle swelling getting worse, contact your heart failure team or seek assessment promptly. Do not wait for your next scheduled appointment.
Conclusion
Heart failure with reduced ejection fraction is serious, but it is also one of the most treatable conditions in modern cardiology. The medications available today, used together and at the right doses, can genuinely improve heart function, reduce symptoms, and extend life in ways that were not possible two decades ago.
The most important things are to be on all four medication classes, to be working toward target doses with your team, and to monitor yourself at home with a daily weight. That combination, good medication optimisation and simple self-monitoring, is where the greatest gains are made.
If you are not sure whether your treatment is fully optimised, the questions box above is the starting point for that conversation. You deserve the full benefit of what modern heart failure medicine can offer.
