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Generic name: Viltolarsen
Dosage form: injection, for intravenous use
Drug class: unclassified agents

What is Viltepso?

Viltepso can be used to treat Duchenne dystrophy, a form of muscular dystrophy that affects both adults and children with a specific gene mutation. You will be tested by your doctor for this mutation.

The US Food and Drug Administration (FDA) approved Viltepso on an "accelerated basis". Viltepso was tested in clinical trials, and some people showed a positive response. However, further research is needed.


Inform your doctors about your allergies, medical conditions, and medications.

Before you take this drug

Inform your doctor if kidney problems have ever occurred.Inform your doctor if you are pregnant or nursing.

How to take Viltepso?

You will be tested by your doctor to ensure that you are not suffering from any conditions that would make it unsafe for you to use Viltepso.

Viltepso infusions are given into the veins, normally once a week. This injection will be given by a healthcare provider.Viltepso should be administered slowly. The infusion may take up to sixty minutes.You may need to have your kidney function checked if you use this medication.

Similar/related drugs

Amondys 45, Exondys 52, Emflaza, Vyondys, Elevidys, Deflazacort, and Delandistrogene Moxeparvovec

What happens if I miss the dose?

If you are unable to attend your appointment, call your doctor and ask for directions.

What should be avoided?

If your doctor prescribes any restrictions regarding food, beverage, or activity, follow their instructions.

Side effects of Viltepso

If you experience any of the following symptoms, seek immediate medical attention: hives; itching; rash; blistering or peeling of skin; fever; difficulty breathing; swelling in your face, lips, or throat; or a rash.

If you notice any of the following signs, call your doctor immediately.

  • Inability to excrete urine
  • A change in the amount of urine passed.
  • Blood in the urine
  • Fluid retention can cause swelling of your ankles, feet, or legs.

Some of the most common side effects include:

  • Runny or stuffy nasal
  • Cough;
  • Fever;
  • The injection site may bruise or swell.
  • Joint pain;
  • Diarrhea;
  • Vomiting;
  • Stomach pain;
  • Fatigue;
  • Shortness of breath

There may be other side effects. For medical advice on side effects, call your doctor. The FDA can be contacted at 1-800-FDA-1088 to report side effects.

Interaction with other drug

Viltepso can be affected by other drugs, such as prescription and over-the-counter medicines, herbal products, vitamins, and herbal supplements. Inform your doctor of all the medicines you are currently taking and those that you have started or stopped using.