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Watch videos of experts discussing envenomation and treatment with CroFab®.
98% of venomous snakebites in the United States are from the North American pit viper, including copperheads, cottonmouths, and rattlesnakes. Make sure you’re prepared with treatment that covers this entire range.
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Review the expert consensus for managing pit viper snakebites.
Learn how to dose CroFab® to gain and continue control of pit viper envenomation.
Watch testimonials and review case studies to learn from patient experiences.
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
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
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
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
rash, fever, myalgia, arthralgia).
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
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
to envenomation and requiring additional treatment may occur.
Please see full Prescribing Information.
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.
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.