Check out the essentials


Scroll through facts and figures for alprolix

Alprolix is the only factor IX with two starting prophy dose options


The recommended starting prophylaxis regimens are either 50 IU/kg once weekly, or 100 IU/kg once every 10 days. Dosing regimen can be adjusted based on individual response.

Children under 12 years of age may have higher Factor IX body weight-adjusted clearance, shorter half-life, and lower recovery. Higher dose per kilogram body weight or more frequent dosing may be needed.

No matter which starting dose you choose, you may be able to extend

In the clinical trial, more than half of the people who started on an every-10-day dosing regimen at 100 IU/kg extended to 14 days or longer between infusions.*

*54% of people in the individualized prophy arm extended to ≥14-day dosing. The overall median dosing interval on study was 12.5 days. The median interval during the last six months in 26 subjects who were on study for at least nine months was 13.8 days.


"After starting on an every-10-day dose, I talked with my doctor and was able to adjust my dosing interval."

Casey, on ALPROLIX

This is a personal account of an ALPROLIX Peer. Please talk to your healthcare provider about whether ALPROLIX may be right for you. Individual results may vary.

Proven Protection
from bleeds*

People infusing prophylactically experienced a median of 1 or fewer spontaneous bleeds per year.

Once-weekly Prophy GROUP In a clinical study, people infusing on a once-weekly prophy regimen with ALPROLIX experienced a median annual spontaneous bleed rate (AsBR) of 1.0 bleed per year. The overall median annual bleed rate (ABR) was 3 bleeds per year. (n=61)

individualized prophy group People who started infusing on a 10-day prophy regimen with ALPROLIX experienced a median AsBR of 0.9 bleeds per year. The overall median ABR was 1.4 bleeds per year. (n=26)

*ALPROLIX has been proven to help patients prevent bleeding episodes using a prophylaxis regimen.

Treat Most Bleeds
with a single

Treat Most Bleeds with a single infusion


A total of 636 bleeding episodes occurred in 114 people in the different groups of the study, excluding the surgery group. These bleeds were treated successfully with ALPROLIX.

Rethink your hemophilia B dosing routine

Around 3 preventative
infusions per month

87% fewerbleeds
vs on-demand treaters

That's less than
one bleed per year

In the individualized prophylaxis group, 29 people were initially given 100 IU/kg every 10 days and their intervals were adjusted to maintain desired Factor IX levels.

†Calculated with a negative binomial model, patient infusing on an individualized prophylaxis regimen versus those treating on-demand.



Well, there you have it. The highlights of ALPROLIX: protection, bleed control, and extended prophy dosing. Still want to learn more? Explore the links below to move onto the next level of ALPROLIX knowledge.

Patient Stories

Watch how switching to ALPROLIX impacted the lives of people with hemophilia B.

The details

Get more in-depth information about ALPROLIX and what it can mean for your hemophilia therapy.

Talk To Your Doctor

Make the most of your doctor visits. Download our discussion guide so you ask the right questions and cover the right topics.

indications and important facts about alprolix 

What is the most important information i should know about ALPROLIX® [Coagulation Factor IX (Recombinant), Fc Fusion Protein]? You should not use ALPROLIX if you are allergic to ALPROLIX or any of the other ingredients in ALPROLIX. Tell your healthcare provider if you have had an allergic reaction to any Factor IX product prior to using ALPROLIX.
Allergic reactions may occur. Call your healthcare provider or get emergency treatment right away if you have any of the following symptoms: hives, chest tightness, wheezing, difficulty breathing, or swelling of the face.

ALPROLIX may increase the risk of forming abnormal blood clots in your body, especially if you have risk factors for developing blood clots. Call your healthcare provider or seek emergency care if you have symptoms of a possible abnormal blood clot, which may include: chest pain, difficulty breathing, unexpected swelling of an arm or leg with or without pain or tenderness.

Your body can also make antibodies called "inhibitors" against ALPROLIX, which may stop ALPROLIX from working properly. Your healthcare provider may need to test your blood for inhibitors from time to time.

THE MOST COMMON SIDE EFFECTS OF ALPROLIX INCLUDE: headache, abnormal sensation in the mouth, and pain in your side with blood in your urine, which may be a sign of clot formation in the urinary collecting system. These are not all the possible side effects of ALPROLIX. Talk to your healthcare provider for more information and about any side effect that bothers you or does not go away.


Tell your healthcare provider about all your health conditions, including if you:

  • Have or have had any medical problems.
  • Are taking any prescription and non-prescription medicines, such as over-the-counter medicines, supplements, or herbal medicines.
  • Are pregnant or planning to become pregnant. It is not known if ALPROLIX may harm your unborn baby.
  • Are breastfeeding. It is not known if ALPROLIX passes into breast milk or if it can harm your baby.
  • Have been told that you have inhibitors to Factor IX (because ALPROLIX may not work for you).


If your bleeding is not controlled and you experience a lack of clinical response to Factor IX therapy, call your healthcare provider right away.

Medicines are sometimes prescribed for purposes other than those listed here. Do not use ALPROLIX for a condition for which it was not prescribed. Do not share ALPROLIX with other people, even if they have the same symptoms that you have.


ALPROLIX is an injectable medicine that is used to help control and prevent bleeding in people with hemophilia B. Hemophilia B is also called congenital Factor IX deficiency.

Your healthcare provider may give you ALPROLIX when you have surgery.


ALPROLIX should be administered as ordered by your healthcare provider. You should be trained on how to do infusions by your healthcare provider. Many people with hemophilia B learn to infuse ALPROLIX by themselves or with the help of a family member. See the booklet called "Instructions for Use" packaged in your ALPROLIX for directions on infusing ALPROLIX. If you are unsure of the procedure, please ask your healthcare provider.


Please read this information carefully before using ALPROLIX and each time you get a refill, as there may be new information. This information does not take the place of talking with your healthcare provider about your medical condition or your treatment.


The risk information provided here is not comprehensive. To learn more, talk about ALPROLIX with your healthcare provider or pharmacist.
The FDA-approved product labeling can be found at or 1-855-MyALPROLIX (692-5776).

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit, or call 1-800-FDA-1088.


Bioverativ Therapeutics Inc.
Waltham, MA 02451 USA
U.S. License #2078

Please see Full Prescribing Information


1-855-MYALPROLIX (1-855-692-5776)

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©2018 Bioverativ, a Sanofi Company. All rights reserved.

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1-855-MYALPROLIX (1-855-692-5776)

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