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Once-weekly ALTUVIIIO is a first-in-class, high-sustained Factor VIII replacement therapy that provides normal to near-normal levels (>40%) for most of the week in adults.^1,3†

Watch how switching to ALTUVIIIO can make a difference

Achieve higher Factor VIII levels with ALTUVIIIO¹

ALTUVIIIO is the #1 most-prescribed Factor VIII replacement therapy⁴

Normal to near-normal
Factor VIII levels for most of the week in adults¹

~4 days with Factor VIII levels in the normal to near-normal range (above ~40%)^†
Factor VIII trough levels of 18%^‡
- Factor VIII clearance has been demonstrated to be higher in patients <18 years, resulting in lower trough levels

Learn about Pharmacokinetics

Proven bleed protection with once-weekly dosing³

Routine prophylaxis (n=128) resulted in a median ABR of 0.0 (Q1, Q3: 0.0-1.0) and a mean ABR of 0.7 (95% CI: 0.5-1.0)^§
Significant improvement in bleed protection in the intrapatient comparison group (n=78): 77% reduction in mean ABR vs prestudy Factor VIII prophylaxis^§

Explore Efficacy

Established safety profile^1,3

The most common adverse reactions (>10% of patients) reported in XTEND-1 were headache (20%) and arthralgia (16%)¹
Formation of inhibitors has been reported following the administration of ALTUVIIIO in the postmarketing setting^1II
- No Factor VIII inhibitors were detected in the XTEND-1 trial³

Explore Safety

^* Based on specialty pharmacy channel and HTC-reported data from October 2023 to April 2026.²
^†Data from the Phase 3 XTEND-1 study in 125 adults ≥18 years receiving a weekly IV infusion of 50 IU/kg ALTUVIIIO.¹
^‡ Mean trough level was computed using available measurements at Week 52/end of study PK sampling visit for the adult population in the XTEND-1 study (n=123).¹
^§Based on treated bleeds.¹
^II In the postmarketing setting, reports are derived from a population of uncertain size; therefore, it is not always possible to reliably estimate frequency or establish a causal relationship to drug exposure.¹

Learn how ALTUVIIIO was studied

The XTEND-1 trial studied ALTUVIIIO in the prophylaxis, on-demand, and perioperative settings in adult and adolescent patients.

Explore the Study

See how ALTUVIIIO performed

ALTUVIIIO has efficacy data in the prophylaxis, on-demand, and perioperative settings for pediatric patients.

Explore Pediatric Efficacy

Indication

ALTUVIIIO^® is indicated for use in adults and pediatric patients with hemophilia A (congenital factor VIII deficiency) for:

Routine prophylaxis to reduce the frequency of bleeding episodes
On-demand treatment and control of bleeding episodes
Perioperative management of bleeding

Limitation of Use

ALTUVIIIO is not indicated for the treatment of von Willebrand disease.

Important Safety Information

Contraindications

ALTUVIIIO is contraindicated in patients who have had severe hypersensitivity reactions, including anaphylaxis, to the product or its excipients.

Warnings and Precautions

Allergic-type hypersensitivity reactions, including anaphylaxis, have occurred with ALTUVIIIO. Discontinue use of ALTUVIIIO if hypersensitivity reaction occurs and manage symptoms as appropriate.
Formation of neutralizing antibodies (inhibitors) to Factor VIII has been reported following administration of ALTUVIIIO. Monitor all patients for the development of Factor VIII inhibitors by appropriate clinical observations and laboratory tests.
If assessment of plasma Factor VIII activity is needed, it is recommended to use a validated one-stage clotting assay. The ALTUVIIIO Factor VIII activity level is overestimated by the chromogenic assay and a specific ellagic acid-based aPTT reagent in one-stage clotting assay by approximately 2.5-fold. If these assays are used, divide the result by 2.5 to approximate the patient's ALTUVIIIO Factor VIII activity level.

Adverse Reactions

The most common adverse reactions (>10% of subjects) reported in clinical trials were headache and arthralgia.

Please see full Prescribing Information.

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Indication

Important Safety Information

ABR=annualized bleed rate; aPTT=activated partial thromboplastin time; CI=confidence interval; IU=international unit; IV=intravenous; PK=pharmacokinetics; Q1=25th percentile; Q3=75th percentile; SD=standard deviation.

References: 1. ALTUVIIIO Prescribing Information. Bioverativ Therapeutics Inc. Waltham, MA. 2. Data on file. April 2026. 3. Wong N, et al. J Clin Pharmacol. 2025;65(7):860-872. 4. Data on file. February 2026. 5. von Drygalski A, et al. N Engl J Med. 2023;388(4):310-318.

ALTUVIIIO is the first and only once-weekly Factor VIII replacement therapy of its kind1,3

Watch how switching to ALTUVIIIO can make a difference

Achieve higher Factor VIII levels with ALTUVIIIO1

ALTUVIIIO is the #1 most-prescribed Factor VIII replacement therapy4

Normal to near-normal Factor VIII levels for most of the week in adults1

Proven bleed protection with once-weekly dosing3

Established safety profile1,3

Learn how ALTUVIIIO was studied

See how ALTUVIIIO performed

Indication

Limitation of Use

Important Safety Information

Contraindications

Warnings and Precautions

Adverse Reactions

Indication

Important Safety Information

ALTUVIIIO is the first and only once-weekly
Factor VIII replacement therapy of its kind^1,3

Achieve higher Factor VIII levels with ALTUVIIIO¹

ALTUVIIIO is the #1 most-prescribed Factor VIII replacement therapy⁴

Normal to near-normal
Factor VIII levels for most of the week in adults¹

Proven bleed protection with once-weekly dosing³

Established safety profile^1,3