I noticed Chris put in that to get medical help as soon as you can. I ment to say that too but after you have appleid the pultice. I can not stress that enough. A pultice does help and is better than the ace bandage stuff and most of the other stuff out there being said like Chris said Yes do remain calm too.
Also you might not be able to get medical help right a way. So use the pultice untill you can be seen by a doctor. Things happen to where the top brass will tell you we can get you out of trouble in 15 minutes Bull it may take six hours before they can come and get you untill then you are on your own. It sucks but it does happen. personal experience it was not a snake bite but gunshot wound not me another guy I can still hear his crying to this day while in first gulf war. GET THE CHARCOAL.
Bryan