It could help but even better is an epi-pen. Now here comes the disclaimer I'm not a doctor but I have basic first aid training. First consult your doctor epi-pens needs to be prescribed by a doctor and they must be administered properly. My wife is allergic to bees and we spend a lot of time in the woods. For us the epi-pen and some back up benedryl are important.

I should also mention that you need to seek medical attention immediately if you are experiencing an allergic reaction.