6 yellow circles connected with an image of a man in each circle performing different activities

Consistent protection with as few as 6 injections a year*


Want a peek into life on Qfitlia®? Hear from your peers!

“The bleed protection and dosing schedule I have now allows my family and I to have the freedom to get up and go whenever we want to.”

— Benjamin


Moderate hemophilia A with inhibitors
Currently taking 20 mg of Qfitlia every other month

book

Qfitlia is the first treatment approved for people aged 12 years and older with hemophilia A or B, with or without inhibitors. Qfitlia prophylaxis helps your blood's ability to clot by lowering a protein called antithrombin

A simple and convenient injection
experience designed with
patients, for patients

  • As few as 6 injections a year*

  • Comes in an easy-to-use prefilled pen

  • No refrigeration for 3 months

Where are you in your hemophilia journey?

Image of person playing table tennis

Discover how Qfitlia works in your body, and how it safely provides proven bleed protection throughout treatment.

Image of person playing soccer

Whether you’re just getting started or preparing for a switch from another treatment, these simple steps and helpful resources can make for a smooth transition.

Find a Sanofi Educator and connect today

Sanofi Community Relations and Education, or CoRe, Managers are dedicated to providing education and empowering those within the hemophilia community through one-to-one communication, as well as through community events and conferences.

Connect With an Educator

* In the clinical study of 227 people with hemophilia, ~67% took Qfitlia every other month, and ~19% took it monthly.
† Prefilled pen administration for the 50 mg dose. Vial and syringe administration for the 10 mg and 20 mg doses.
‡ Can be stored at room temperature for a single period of up to 3 months within the expiration date printed on the label.


Important Safety Information and Indication
INDICATION
IMPORTANT SAFETY INFORMATION
INDICATION
Qfitlia® (fitusiran) is a prescription medicine used for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adults and children 12 years and older with hemophilia A or B with or without Factor VIII or IX inhibitors.

It is not known if Qfitlia is safe and effective in children younger than 12 years of age.
IMPORTANT SAFETY INFORMATION

Qfitlia can cause SERIOUS SIDE EFFECTS, including:

  • Abnormal blood clotting (thrombotic events): Serious blood clots have occurred in people treated with Qfitlia. Qfitlia can cause blood clots to form in the blood vessels in your arms, legs, lungs, heart, brain, eyes, or head. Your risk of blood clots is greater if your antithrombin (AT) blood level is persistently less than 15% or if you have certain other conditions. Your healthcare provider (HCP) will check your AT blood levels before and during treatment with Qfitlia

  • Gallbladder disease: Qfitlia can cause gallstones and inflammation of your gallbladder, which might require surgery to remove your gallbladder. Tell your HCP right away if you develop stomach pain, indigestion, nausea, or vomiting. Your HCP may temporarily or permanently stop Qfitlia if you develop any of these symptoms


What is the most important information I should know about Qfitlia?

Qfitlia helps your blood form clots. Do not stop using Qfitlia without talking to your HCP. If you miss doses or stop using Qfitlia, you may no longer be protected against bleeding.


Use of a clotting factor concentrate (CFC) or bypassing agent (BPA) to help protect against bleeding must be stopped within 7 days after your first dose of Qfitlia.


Your HCP may prescribe on-demand CFC or BPA if you bleed during treatment with Qfitlia. Carefully follow your HCP’s instructions regarding when to use on-demand treatment with CFC or BPA, including the prescribed dose and timing of the CFC or BPA.


Get medical help right away if you get any of these signs or symptoms of blood clots during or after treatment with Qfitlia:

  • Swelling, pain, or redness in arms or legs
  • Coughing up blood
  • Shortness of breath
  • Severe chest pain or tightness of the chest
  • Fast heart rate
  • Feeling faint or passing out
  • Severe or persistent headache
  • Difficulty speaking or understanding language
  • Feeling confused
  • Numbness or weakness in your face, arms, or legs
  • Sudden loss or changes in your vision, eye pain, or swelling

What are the possible side effects of Qfitlia?

  • Qfitlia can cause other serious side effects, including an increase in your blood liver enzymes. Your HCP will do blood tests to check your liver function before and during treatment with Qfitlia

  • The most common side effects of Qfitlia include viral infection, common cold symptoms, and bacterial infection

These are not all the possible side effects of Qfitlia.


What should I tell my HCP before using Qfitlia?

  • Tell your HCP about all of your medical conditions, including if you have liver problems, a history of gallbladder disease, are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed

  • Females who are able to become pregnant: Hormonal birth control may increase your risk of blood clots if used during treatment with Qfitlia. Talk to your HCP about effective forms of non-hormonal birth control you can use before starting and during treatment with Qfitlia

  • Tell your HCP about all of the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements

©2026 Sanofi. All rights reserved. All trademarks mentioned are the property of the Sanofi group except where trademarks are owned by third parties. MAT-US-2413048-v1.0-07/2026 Last Updated: July 2026