What Is Voydeya? Uses, Dosage, and What You Need to Know in 2026

Voydeya (danicopan) is a relatively new medication that represents a significant advance in the treatment of a rare blood disorder called paroxysmal nocturnal hemoglobinuria, or PNH. If you or someone you care for has been prescribed Voydeya, here is a comprehensive, easy-to-understand guide covering everything patients need to know in 2026.

What Is Voydeya (Danicopan)?

Voydeya is the brand name for danicopan, an oral complement Factor D inhibitor. It was approved by the FDA on March 29, 2024 and is manufactured by Alexion Pharmaceuticals, Inc. (a subsidiary of AstraZeneca). Voydeya is a first-in-class medication — meaning it is the first drug in its specific category to be approved by the FDA.

What Is Voydeya Used For?

Voydeya is FDA-approved as add-on therapy to ravulizumab (Ultomiris) or eculizumab (Soliris) for the treatment of extravascular hemolysis (EVH) in adults with paroxysmal nocturnal hemoglobinuria (PNH).

What Is PNH?

PNH (paroxysmal nocturnal hemoglobinuria) is a rare, chronic, and potentially life-threatening blood disorder. It is caused by a mutation in the PIGA gene in blood-forming stem cells, which results in red blood cells missing protective proteins (CD55 and CD59) on their surface. Without these proteins, the immune system's complement pathway attacks and destroys the red blood cells. PNH affects an estimated 15.9 persons per million and is associated with anemia, fatigue, thrombosis (blood clots), and reduced quality of life.

What Is Extravascular Hemolysis (EVH)?

Hemolysis means the destruction of red blood cells. In PNH, this can occur in two locations:

Intravascular hemolysis (IVH): Red blood cell destruction inside blood vessels — the primary type addressed by C5 inhibitors like eculizumab and ravulizumab

Extravascular hemolysis (EVH): Red blood cell destruction outside blood vessels (primarily in the liver and spleen) — caused by C3b protein coating on blood cells. This is what Voydeya targets.

Approximately 10–20% of PNH patients on C5 inhibitors continue to experience clinically significant EVH, leading to ongoing anemia, fatigue, and sometimes transfusion dependence despite treatment. Voydeya was developed specifically for this group.

Voydeya Dosage: How Much Do You Take?

Voydeya comes as 50 mg and 100 mg film-coated oral tablets. Here is the standard dosing:

Starting dose: 150 mg three times daily (one 50 mg tablet + one 100 mg tablet, taken together, three times a day)

With or without food: You can take Voydeya with or without food, whichever is more convenient

Dose escalation: Your doctor may increase the dose to 200 mg three times daily (two 100 mg tablets TID) after 4 weeks if your hemoglobin has not improved adequately, if you required a transfusion, or based on their clinical judgment

Missed dose: Take it as soon as you remember, unless it is within 3 hours of your next scheduled dose. Never take two doses at the same time.

Who Should Not Take Voydeya?

Voydeya is contraindicated if you:

Have an unresolved serious infection caused by encapsulated bacteria (meningitis, pneumonia, Hib disease)

Have severe liver disease (Child-Pugh Class C hepatic impairment)

Are not on a C5 inhibitor (eculizumab or ravulizumab) — Voydeya is not approved as monotherapy

Is Voydeya a Controlled Substance?

No. Voydeya is not a controlled substance and is not scheduled by the DEA. However, it does require a prescription and is only available through the VOYDEYA REMS program, which adds access restrictions not typically seen with standard prescription drugs.

How Effective Is Voydeya?

The FDA approved Voydeya based on results from the ALPHA Phase 3 trial (ALXN2040-PNH-301). In this trial, 84 adults with PNH and clinically significant EVH were enrolled. Patients on Voydeya showed significant improvement in hemoglobin levels at 12 weeks versus placebo, with many achieving hemoglobin levels in the normal range, fewer transfusions, and improved fatigue scores (measured by FACIT-Fatigue).

To learn more about exactly how Voydeya works at the molecular level, see our article How Does Voydeya Work? Mechanism of Action Explained. For help finding where to fill your Voydeya prescription, visit medfinder.com.