Another field treatment you can use if you don't have plantain is to immediately select the leaves from three different succulent broad-leaved plants (plantain, clovers, dandelion, etc. just use what is immediately at hand) and crush them with your fingers and rub the mush on the sting site. Jucier plants are best and it must be done immediately. I've used it and it does seem to reduce the reactions. My Dad swore by it. If no other treatments are immediately available it is something that can be done quickly.