The first thing to do during the anaphylaxis attack is to ring for ambulance, since the only aid here is an injection of special medical drugs. However, there are ways of personal protection. The most obvious one is to avoid products you are allergic to.
In case the anaphylaxis attack takes place, you should remove the source of an allergic agent. Then, if it is a reaction for the insect bite, it is advisable to apply a tourniquet, so that the poison won't be present in blood circulation. Try to put a victim in a horizontal position lying on the side. In this way there won't be any problems with breathing. Then, neck, chest and stomach are free for the easy oxygen input.