Control With Confidence

The only antivenom derived from native US pit vipers to treat envenomations from all species of North American pit vipers¹

Strength and Speed When You Need It Most

Clinically Relevant

Derived from geographically and clinically relevant US snakes^1,2

See Our
Venomics Approach

Specifically Engineered

Designed with a spectrum of small, venom-specific protein (Fab) fragments^1,3

View the MOA

Proven Efficacy

Halted all clinically important effects of envenomation, with Level 1 evidence specifically for copperhead envenomation^1,4

Examine the Data

Antivenom for Rattlesnakes, Cottonmouths, and Copperheads

Dosing for Initial and Sustained Control of Envenomation

Administer CroFab as soon as possible to prevent clinical deterioration¹

Review Dosing Recommendations

CroFab in Clinical Practice – Hear Real Patient Experiences

Daniel CroFab patient experience video thumbnail

Daniel

Julia and Laura CroFab patient experience video thumbnail

Julia and Laura

Julie and Haley CroFab patient experience video thumbnail

Julie and Haley

Jessica CroFab patient experience video thumbnail

Jessica

Caitlyn CroFab patient experience video thumbnail

Caitlyn

REFERENCES

1. CroFab®. Prescribing information. BTG International Inc.; August 2018. 2. WHO Expert Committee on Biological Standardization. WHO Technical Report Series, No. 1004, Annex 5; 2017. Accessed June 13, 2022. https://cdn.who.int/media/docs/default-source/biologicals/blood-products/document-migration/antivenomglrevwho_trs_1004_web_annex_5.pdf?sfvrsn=ef4b2aa5_3&download=true 3. Laustsen AH, María Gutiérrez J, Knudsen C, et al. Pros and cons of different therapeutic antibody formats for recombinant antivenom development. Toxicon. 2018;146:151-175. 4. Gerardo CJ, Quackenbush E, Lewis B, et al. The efficacy of Crotalidae polyvalent immune Fab (ovine) antivenom versus placebo plus optional rescue therapy on recovery from copperhead snake envenomation: a randomized, double-blind, placebo-controlled, clinical trial. Ann Emerg Med. 2017;70(2):233-244.

Indication

CroFab® Crotalidae Polyvalent Immune Fab (Ovine) is a sheep-derived antivenin indicated for the management of adult and pediatric patients with North American crotalid envenomation. The term crotalid is used to describe the Crotalinae subfamily (formerly known as Crotalidae) of venomous snakes which includes rattlesnakes, copperheads and cottonmouths/water moccasins.

Important Safety Information

Contraindications

Do not administer CroFab® to patients with a known history of hypersensitivity to any of its components, or to papaya or papain unless the benefits outweigh the risks and appropriate management for anaphylactic reactions is readily available.

Warnings and Precautions

Coagulopathy: In clinical trials, recurrent coagulopathy (the return of a coagulation abnormality after it has been successfully treated with antivenin), characterized by decreased fibrinogen, decreased platelets, and elevated prothrombin time, occurred in approximately half of the patients studied; one patient required re-hospitalization and additional antivenin administration. Recurrent coagulopathy may persist for 1 to 2 weeks or more. Patients who experience coagulopathy due to snakebite should be monitored for recurrent coagulopathy for up to 1 week or longer. During this period, the physician should carefully assess the need for re-treatment with CroFab® and use of any type of anticoagulant or anti-platelet drug.

Hypersensitivity Reactions: Severe hypersensitivity reactions may occur with CroFab®. In case of acute hypersensitivity reactions, including anaphylaxis and anaphylactoid reactions, discontinue infusion and institute appropriate emergency treatment. Patients allergic to papain, chymopapain, other papaya extracts, or the pineapple enzyme bromelain may also have an allergic reaction to CroFab®. Follow-up all patients for signs and symptoms of delayed allergic reactions or serum sickness (e.g., rash, fever, myalgia, arthralgia).

Adverse Reactions

The most common adverse reactions (incidence ≥ 5% of subjects) reported in the clinical studies were urticaria, rash, nausea, pruritus and back pain. Adverse reactions involving the skin and appendages (primarily rash, urticaria, and pruritus) were reported in 12 of the 42 patients. Two patients had a severe allergic reaction (severe hives and a severe rash and pruritus) following treatment and one patient discontinued CroFab® due to an allergic reaction. Recurrent coagulopathy due to envenomation and requiring additional treatment may occur.

Please see full Prescribing Information.

BTG and the BTG roundel logo are registered trademarks of BTG International Ltd.

CroFab® is a registered trademark of BTG International Inc.

TIME IS TISSUE® is a trademark of Protherics Medicines Development Ltd., a BTG International group company. BTG Specialty Solutions Center™ is a trademark of BTG International Ltd. SnakeBite911 and the snakehead logo are trademarks of Protherics UK Ltd. Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. Google Play and the Google Play logo are trademarks of Google Inc.

If you wish to report an adverse event or product quality complaint,
please call 1-877-377-3784.
You are encouraged to report side effects of prescription drugs to the FDA.
Visit www.fda.gov/MedWatch or call 1-800-FDA-1088.

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Phone BTG Specialty Solutions Center<sup>™</sup>

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