from webmd
Immediate home treatment
Immediate home treatment should not delay transport for emergency evaluation.
Remain calm. Lie down and stay as quiet and still as possible after the bite. Any physical activity may increase the flow of venom to the bloodstream.
If you are not sure what type of snake or lizard bit you, call a poison control center immediately to help identify the snake or lizard and determine the next steps to take.
If signs of shock are present or the bitten person is not breathing, see the topic Dealing With Emergencies.
If an extraction device is used, it should be applied within 3 minutes of the bite. Leave it on for 30 minutes. Do not cut the skin over the bite before applying the suction.
Remove any jewelry on the bitten limb. The limb might swell, making it more difficult to remove the jewelry after swelling begins.
With a pen, mark the edge of the swelling around the bite every 15 minutes so the progression of swelling can be evaluated.
Apply a splint on an arm or leg that was bitten to limit motion and limit the flow of venom into the bloodstream. If possible, keep the bitten area at or slightly lower than the level of the heart.
Drink fluids (not alcohol) in frequent, small amounts unless vomiting is a problem. This will help prevent dehydration and reduce the risk of shock.