Mavacamten for Cats — Obstructive HCM
A cardiac myosin inhibitor for cats diagnosed with obstructive HCM. Titrated individually by your own veterinarian or cardiologist, with echocardiographic follow-up.
$369
Key facts
| Price | $369 per box |
|---|---|
| Shipping | $32 flat per order, tracked — about 3 days to Europe |
| Prescription | Prescription medicine. Use it only under the guidance of your own veterinarian. |
| Indication | Positioned for cats with a confirmed obstructive HCM diagnosis |
| Evidence | Investigational in cats — the molecule is approved for obstructive HCM in human medicine |
| Form | Oral tablet, 1 mg |
| Schedule | Once daily; dose titrated individually by your own veterinarian with echo follow-up |
| Alongside | Works with your cardiologist’s care, not instead of it |
| Purity | Lab-tested to a 99.9% standard, every batch |
| Status | Prescription medicine. Use it only under the guidance of your own veterinarian. |
Quick answers
What does it cost?
$369 per box. Shipping is $32 per order, shown before you pay. There is no subscription: you pay per box.
Who should not use it?
It is only for cats with obstructive HCM confirmed by echocardiography. It lowers how strongly the heart contracts, so cats whose heart already contracts weakly are not candidates, and the dose needs echocardiographic follow-up. Your veterinarian or cardiologist decides.
How fast is delivery?
Every parcel ships tracked. Typical delivery once it ships: Europe 2–4 days, Türkiye 1–3 days, Gulf (GCC) 3–6 days, Rest of Asia 4–8 days, North America 4–8 days, Oceania 5–9 days.
Do I need a prescription?
It is a prescription medicine. Use it only under the guidance of your own veterinarian, and only where the law of your country allows it.
Can I return it?
If your box arrives damaged or wrong, we replace or refund it. In the EU and the UK you can withdraw within 14 days of delivery and return an unopened box; a box whose seal has been broken cannot be returned, for health-protection reasons.
What rapamycin therapy actually costs →
A different lever on the same disease
Mavacamten is a cardiac myosin inhibitor: it acts directly on the contractile protein of the heart muscle, easing the excessive contraction that, in the obstructive form of hypertrophic cardiomyopathy, narrows the outflow tract while the heart squeezes. In human medicine the molecule is fully approved for obstructive HCM. In cats it is investigational: published feline studies are small and early, showing reduced outflow-tract obstruction after dosing — a real signal, and not yet a settled treatment. No medicine is approved to treat obstructive HCM in cats.
How it differs from our rapamycin therapy
The two act on different parts of the disease, and a cardiologist chooses between them — or neither. Rapamycin is studied for slowing the thickening of the heart wall in subclinical disease. Mavacamten addresses the obstruction itself in cats whose HCM is obstructive. One is aimed at the course of the disease, the other at its mechanics.
Where this fits
- For cats with a diagnosed, obstructive form of HCM — confirmed by echocardiography, not suspected from a murmur.
- It does not replace your cardiologist. The dose is set low and adjusted individually by your own vet, and every adjustment is guided by echocardiographic follow-up.
- Because the mechanism reduces the force of contraction, cats with reduced systolic function are not candidates; have your cardiologist rule this out before starting.
How the therapy works
A small once-daily oral tablet (1 mg strength). The dose is fractions of a tablet, titrated by your own prescribing veterinarian from the cat’s weight, response and echo findings — there is no fixed program strength, by design.
Guided by your own veterinarian
Mavacamten is a prescription medicine. Use it only under the guidance of your own veterinarian, who knows your cat’s history and cardiac workup. It is not suitable for cats without a confirmed obstructive HCM diagnosis, or for cats whose echo shows reduced contractile function. Lab-tested to a 99.9% purity standard.
📦 Shipping time & tracking
- Every parcel ships fully tracked — the tracking number is emailed the moment the label is created.
- Flat €30 shipping worldwide, shown up front — no surprise fees at checkout.
- Your box ships once your order is confirmed; the delivery windows below are counted from dispatch.