Overview
When cardiomyopathy develops in Alström — either in infancy or in adulthood — heart medications are the foundation of treatment. The medication classes used are similar to those in other forms of heart failure, but pediatric dosing and Alström-specific considerations matter. This article explains the main heart medications used in Alström, what each does, and what side effects to watch for.
ACE inhibitors and ARBs
What they do
Angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) reduce the workload on the heart by relaxing blood vessels and reducing fluid retention. They protect heart muscle from harmful remodeling and are first-line therapy for both pediatric and adult dilated cardiomyopathy.¹
Common medications
- Captopril — short-acting, often used in babies
- Enalapril — longer-acting, used in older children and adults
- Lisinopril — once-daily dosing
- Valsartan, losartan (ARBs) — alternatives to ACE inhibitors
What to watch for
- Low blood pressure (especially after first doses)
- Dry cough (with ACE inhibitors specifically; switching to ARB resolves)
- Elevated potassium
- Reduced kidney function (regular blood tests are needed)
- Rare: angioedema (swelling of face, lips, tongue) — needs immediate care
Dose adjustments
ACE inhibitors are usually started at low doses and increased gradually. Many years on these medications are common.
Beta-blockers
What they do
Beta-blockers slow the heart rate and reduce the strain on the heart. In dilated cardiomyopathy, beta-blockers protect the heart muscle from damaging stress hormones over time.²
Common medications
- Carvedilol — most commonly used in pediatric DCM
- Metoprolol succinate — alternative
- Bisoprolol — used in some adults
What to watch for
- Slow heart rate
- Low blood pressure
- Fatigue (especially when starting)
- Worsening of asthma in some patients
- Cold hands and feet
- Sleep disturbance
Important caveats
Beta-blockers should not be started during acute decompensation — they're added once the patient is stable. Doses are increased very gradually.
Diuretics
What they do
Diuretics ("water pills") help the kidneys remove excess fluid, reducing congestion in the lungs and tissues. Used when fluid overload is present.
Common medications
- Furosemide (Lasix) — most common loop diuretic
- Spironolactone — potassium-sparing diuretic with additional heart-protective effects
- Hydrochlorothiazide — thiazide diuretic, sometimes added
What to watch for
- Dehydration if dose is too high
- Low or high potassium (depending on which diuretic)
- Frequent urination
- Reduced kidney function
Dose adjustments
Diuretic doses are adjusted based on weight, fluid status, and lab values. Daily weight monitoring at home is sometimes recommended.
SGLT2 inhibitors
What they do
Originally developed for type 2 diabetes, SGLT2 inhibitors are now established for heart failure regardless of diabetes status. They reduce fluid retention, protect kidney function, and reduce heart failure hospitalizations.
Common medications
- Dapagliflozin (Farxiga)
- Empagliflozin (Jardiance)
What to watch for
- Genital fungal infections
- Dehydration
- Diabetic ketoacidosis (rare, usually in patients with diabetes)
- Reduced kidney function initially
Special relevance in Alström
Many adults with Alström have both heart failure and type 2 diabetes — SGLT2 inhibitors address both. They're increasingly used in this population.³
Sacubitril/valsartan (Entresto)
What they do
A combined drug that includes an ARB and a neprilysin inhibitor. Reduces heart failure hospitalizations and mortality in patients with reduced ejection fraction.
What to watch for
- Low blood pressure
- Elevated potassium
- Reduced kidney function
- Should not be combined with ACE inhibitors
Digoxin
What it does
A historical heart medication that increases the strength of contraction. Used less commonly today but still has a role in some patients with heart failure or atrial fibrillation.
What to watch for
- Narrow therapeutic window — too much causes toxicity
- Levels need monitoring with blood tests
- Symptoms of toxicity: nausea, vision changes, abnormal heart rhythms
Anticoagulants
What they do
Used in patients with severe heart failure or arrhythmias to prevent blood clots. Common in adults with restrictive cardiomyopathy or atrial fibrillation.
Common medications
- Warfarin (Coumadin) — older, requires regular blood test monitoring (INR)
- Direct oral anticoagulants (DOACs) — apixaban (Eliquis), rivaroxaban (Xarelto)
What to watch for
- Increased bleeding (nosebleeds, easy bruising, GI bleeding)
- Drug interactions
- Dose adjustments for kidney function
Practical management tips
Daily routine
- Take medications consistently at the same time each day
- Use a pill organizer for adults on multiple medications
- Set phone reminders if helpful
- Don't skip doses without consulting your team
Side-effect monitoring
- Daily weight in adults with heart failure (sudden 2–3 lb gain over 1–2 days needs attention)
- Symptom tracking — exercise tolerance, breathlessness, swelling
- Regular labs — kidney function, potassium, liver function as recommended
Other medication interactions
Several medications affect heart drug levels or kidney function:
- NSAIDs (ibuprofen, naproxen) — generally avoid in heart failure
- Some antibiotics
- Certain herbal supplements (St. John's Wort, others)
Always check with your pharmacist or cardiologist before starting any new medication or supplement.
When to call the cardiology team
Contact the team for:
- New or worsening shortness of breath
- Sudden weight gain (2–3 lb over a few days)
- Increased swelling in legs or abdomen
- New chest pain or pressure
- Palpitations or irregular heartbeat
- Dizziness or fainting
- Significant medication side effects
Common questions
Frequently asked questions
Short answers grounded in the article and the underlying references, so families can quickly understand the main point without losing the medical meaning.
Question
Why so many medications?
Answer
Each addresses a different aspect of heart failure — afterload reduction, neurohormonal blockade, fluid balance, rhythm control. The combination is more effective than any single drug. Most adults with significant cardiomyopathy take 3–5 heart medications regularly.
Question
Can my child take heart medications and antidiabetic medications together?
Answer
Yes — this is common in older children and adults with Alström. Drug interactions are managed by the prescribing team. SGLT2 inhibitors are particularly useful because they treat both conditions.
Question
Will the medications cure the cardiomyopathy?
Answer
Medications support heart function and slow progression but don't cure underlying genetic cardiomyopathy. Many people on optimal medical therapy have stable or improved heart function for years.
Question
What about generic vs brand-name?
Answer
Generic versions of most heart medications are available and equivalent. Some newer medications (sacubitril/valsartan) are still brand-name only. Insurance coverage varies.