What is Amondys 45 (viltolarsen) and why does its price matter?
Amondys 45 is a branded drug for Duchenne muscular dystrophy (DMD) in people with a specific dystrophin gene mutation. Because this is an ultra-rare, high-cost therapy, annual spending typically dominates what people mean by “annual cost” when they search for 2025 pricing.
What will Amondys 45 cost in 2025 on an annual basis?
I can’t give a 2025 annual cost figure from the information provided here. Drug “annual cost” can vary a lot depending on:
- country and payer (US cash price vs. insurance negotiated price),
- dosing and the patient’s weight,
- how the “annual cost” is calculated (list price per vial vs. net price after rebates),
- whether you mean wholesale acquisition cost (WAC), wholesale costs, or out-of-pocket cost.
If you’re in the US, what number should you look for (WAC vs net vs out-of-pocket)?
People searching “annual cost 2025” usually want one of these:
- List price / WAC (often used in pricing databases)
- Net price (after rebates; harder to see publicly)
- Patient out-of-pocket (depends on insurance plan, copay assistance, deductibles, and prior authorization)
If you tell me your country (and whether you mean list price or what a patient typically pays), I can tailor the answer to the right “annual cost” definition.
How is annual cost calculated for Amondys 45?
Annual cost depends on the total drug needed across the year:
- dosing is weight-based, and the drug is given on a schedule that determines how many doses are used per year,
- pricing can be quoted per vial and then multiplied by the doses required,
- the patient’s weight and the dose size can materially change the annual total.
What to do if you need the 2025 annual budget number
To get a reliable 2025 annual cost estimate, you can:
1) confirm your country and payer context (US vs other; insurer vs self-pay),
2) confirm the dose per infusion based on weight,
3) use the applicable published price basis you care about (WAC vs net vs expected patient cost).
If you share your country and the dose/weight (or your prescribed dose), I can help you set up the calculation format for an annual cost estimate.
Sources
No sources were provided with your question, so I didn’t cite any.