Overview
11 DESCRIPTION North American Coral Snake Antivenin (Equine) is a sterile lyophilized powder for solution for injection containing serum globulins obtained by fractionating blood from healthy horses that have been immunized with eastern coral snake ( Micrurus fulvius fulvius ) venom. Prior to lyophilization, the product contains 0.25% phenol.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action North American Coral Snake Antivenin (Equine) specifically binds to and neutralizes coral snake venom. 12.2 Pharmacodynamics North American Coral Snake Antivenin (Equine) is standardized for potency in mice in terms of its LD 50 neutralizing capacity per milliliter as determined by intravenous injection of a graded series of mixtures of North American Coral Snake Antivenin (Equine) with M. f. fulvius venom. Based on this assay system, the reconstituted contents of each vial (10 mL) will neutralize approximately 250 mouse LD 50 or approximately 2 mg of M.f. fulvius venom. The results of cross-neutralization tests indicate that North American Coral Snake Antivenin (Equine) will neutralize the venom of M.
Indications
- 1 INDICATIONS AND USAGE North American Coral Snake Antivenin (Equine) is indicated only for the treatment of envenomation caused by bites of North American coral snakes - Micrurus (including the eastern and Texas varieties). North American Coral Snake Antivenin (Equine) is a horse-derived antivenin indicated for the treatment of envenomation caused by North American coral snakes - Micrurus . ( 1 )
Common Doses
- 2 mg
- 2 mL
- 4 mL
- 10 mL
Dosage
2 DOSAGE AND ADMINISTRATION For intravenous use only. For intravenous use only. • In adults and adolescents, the dose may vary from 3 to 5 vials, depending on the response to treatment. ( 2.1 ) • In small children, the dose may be decreased, depending on the response to treatment. ( 2.1 ) • Contents of each reconstituted vial can neutralize approximately 250 mouse (Lethal Dose) LD 50 or approximately 2 mg of M. fulvius venom. ( 2.1 ) • Infuse the first 1 or 2 mL over a 3- to 5-minute period, observing for allergic reaction.
Contraindications
- 4 CONTRAINDICATIONS • Do not administer North American Coral Snake Antivenin (Equine) prophylactically to asymptomatic patients. 1 • Do not administer North American Coral Snake Antivenin (Equine) to patients with a known history of hypersensitivity to horse serum unless the benefits outweigh the risks and appropriate management for anaphylactic reactions is readily available. • Do not administer North American Coral Snake Antivenin (Equine) prophylactically to asymptomatic patients.
Side Effects
- 6 ADVERSE REACTIONS The most common adverse reactions observed after treatment with North American Coral Snake Antivenin (Equine) were anaphylaxis and serum sickness, vomiting, and abdominal pain. Because these reactions were reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency reliably or to establish a causal relationship to drug exposure. Adverse reactions may include anaphylaxis and serum sickness, vomiting, and abdominal pain. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Pfizer, Inc.
Interactions
- No major interactions listed on the FDA label. Always consult a healthcare professional.