Rattler Antivenom Product Videos‌

Hello, we are Mg Biologics.

Owned and founded by Mark and Elizabeth Meyer.
Experts in antibodies for both equine and canine.
Rattler Antivenom is the first new, made in the USA antivenom in the last 50+ years.

Benefits include the following:

  • Affordable
  • 50ml single dose vs. multiple 10ml doses
  • USDA Licensed
  • Safe
  • Efficacious
  • Our goal is to neutralize all of the venom
  • Dual label

USDA Licensed Antivenom, Crotalidae, Polyvalent, Equine Origin

  • Envenomation is recognized as a disease
  • Rattler Antivenom is proven to treat crotalidae envenomation


  • 1200 doses to 198 veterinarians across the country
  • Five different states: Nebraska, Arizona, New Mexico, Florida and Texas
  • Eastern Diamondback, Western Diamondback, Prairie Rattlesnake, Copperhead, Cottonmouth/Water Moccasin, and Mohave Rattlesnake
  • Only product with Prairie AND MOHAVE TYPE A!!
  • 0.76%!!! SAFETY RATE


  • 17 veterinary clinics
  • 132 dogs
  • 34 horses
  • Licensed for canine and equine

Mouse Trials at Oklahoma State University

  • LD50/ED50
  • When given 3-5x the lethal amount, we were proven efficacious
  • *Pending peer review

Frozen is Faster

  • 10ml vials vs. 50ml frozen
  • Single 50ml dose vs. multiple 10ml vials
  • Keep frozen until use
  • Ready to use in under five minutes
  • Three-year shelf life
  • No reconstitution or dilution
  • Affordable

Custom Designed Benefits

  • Antivenom, Crotalidae, Polyvalent, Equine Origin
  • Eastern Diamondback, Western Diamondback, Prairie Rattlesnake, and Mohave Type A
  • Only product with Prairie AND MOHAVE TYPE A!!
  • Hemolytic – break down blood
  • Neurotoxic – break down the nervous system
  • Most broad spectrum Antivenom on the market
  • Covers all North American Crotalidae
  • Made in the USA, not imported

“Whole IgG is key”

  • 21 day half life
  • After 21 days half the potency will be viable
  • Extremely stable
  • Other products are fractionated
  • F(ab) – two pieces (filtered out by kidneys 2-4 hours)
  • F(ab)2 – V shaped molecule (filtered out by kidneys 8-12 hours)
  • The goal is to neutralize all the venom of a typical envenomation

How to use Rattler Antivenom

  • 50ml
  • Use the third port, far right tab (Twist, Insert filtered IV, Administer)

Keep Frozen Until Use

  • Arrives on dry ice
  • Store in freezer right away
  • Three-year shelf life

Using Rattler Antivenom

  • Product labels are available to view or download here
  • Place in warm, not hot, water bath
  • Massage for three to five minutes
  • Bring product to body temperature
  • Use the third, far right tab
  • Twist
  • Insert filtered IV
  • Administer
  • Always use a filtered IV set
  • Go slow at first and then set flow rate, monitor for signs of anaphylaxis
  • Administration time is 20-60 minutes

Size does not matter.

  • Always give the full 50ml dose
  • We are treating the amount of venom, not the size of the animal

How is Rattler different than what I am using now?


  • 50mls for the same price as 10mls

Ease of use

  • Pre-mixed
  • No reconstitution or dilution
  • Ready in under five minutes
  • Easy to train

Three-year shelf life

  • Store frozen until use
  • Ability to inventory antivenom

“One and done”

  • For the “typical” envenomation

North American Crotalidae

  • Examples:
  • Eastern Diamondback
  • Western Diamondback
  • Prairie Rattlesnake
  • Mohave Rattlesnake
  • Copperhead
  • Cottonmouth/Water moccasin

Safe with vaccine

  • In previously vaccinated patients


What happens if my freezer dethaws?

  • Safe to refreeze so long as it has stayed cool to the touch

Administration rate?

  • 20-60 minutes

What is an “atypical” envenomation?

  • Small patients
  • Multiple bites
  • Bites to the face
  • Near airways

It’s been over 24 hours, can I still give Rattler Antivenom?

  • Yes, our goal is to neutralize all of the venom

Do I really need to use it on a Copperhead bite?

  • Yes!
  • Change the paradigm!
  • Our goal is to neutralize all of the venom

How do you ship the product?

  • FedEx
  • Rattler is shipped two days or less

Do I have to use a specific IV set?

  • Any filtered IV set will work