Snake venoms can cause many problems, such as: Antivenom is a
medicine that is given to stop snake venom from binding to
tissues and causing serious blood, tissue, or nervous system
problems. Side effects from antivenom can include rash, itching,
wheezing, rapid heart rate, fever, and The use of antivenom
depends on how much poison was injected (envenomation) and the
type and size of the snake. Large snakes tend to inject more
venom than smaller snakes do. Antivenom is used for mild,
moderate, and severe envenomations. For best results, antivenom
should be given as soon as possible after the bite. It is
usually given within the first 4 hours after the snakebite and
may be effective for 2 weeks or more after the bite. Serum
sickness is a delayed reaction to receiving antivenom and can
occur several days or weeks after treatment. Symptoms of serum
sickness include fever, chills, rash, muscle aches, joint aches,
itching, and blood in the urine. Call your doctor if you have
received antivenom medicine and you now