Antivenin (Micrurus fulvius), Wyeth, is a refined, concentrated, and lyophilized preparation of serum globulins obtained by fractionating blood from healthy horses that have been immunized with eastern coral snake (Micrurus fulvius fulvius) venom. The new antivenin from Arizona would be a second source because an expiration date is nearing and supplies are running low of an antivenin that Wyeth Pharmaceutical first developed about seven years ago, Dr. Douglas Lee, an emergency room physician at Lee Memorial … 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. Research shows that coral snake venom may have antiviral and antibacterial properties. The most common antivenin is the Wyeth (Crotalidae) Polyvalent antivenin. However, the manufacturer stopped production in 2006. Wyeth kept up production of coral snake antivenom for almost 40 years. Did some research on the venom after losing a good dog to a brown snake. It contains a neuro toxin, blood coagulant and breaks down the red blood cells that carry oxygen. Antivenin (Crotalidae) Polyvalent, Wyeth, is a refined and concentrated preparation of serum globulins obtained by fractionating blood from healthy horses immunized with the following venoms: Crotalus adamanteus (Eastern diamond rattlesnake), C. atrox (Western diamond rattlesnake), C. durissus … Prior to lyophilization, the product contains … Brown snake In contrast to the coral snake, the Australian brown snake (Pseudonaja) is highly venomous and considered to be … Here in Australia, brown snake antivenom can cost $300 plus per vial and has to be refrigerated. Update: In October, 2016, Pfizer announced that its coral snake antivenom (formerly Wyeth’s) was back in production and available to order. Clinical trials of the new antivenom are effectively on hold for now. The traditional treatment for coral snake envenomation has been a horse-derived IgG antibody antivenom produced by Wyeth Pharmaceuticals (now a subsidiary of Pfizer, Inc.) called the North American Coral Snake Antivenin. Wyeth Pharmaceuticals initially manufactured this antivenom, which is now a part of Pfizer. Prior to lyophilization, the product contains 0.25% phenol and 0.005% … ... Also, some of the antivenom serum available is imported from Costa Rica, such as antivenom against coral snake bites. Coral snake venom is priced at over $4,000 per gram, reflecting an array of purported medical uses. (For more about this, see “Coral Snake Antivenom” in the bonus clips of The Venom Interviews.) Luckily, bites by shy coral snakes account for fewer than 1 percent of U.S. snakebites, and antivenin is not always needed. 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