Producing much venom is dangerous isn't it?

The swelling caused by the stings commonly range from the size of a plum to the size of an orange, and reach their full size only a few minutes after the initial sting. If the barbed stinger is torn out, the entry hole oozes a foul-smelling green liquid. It is unknown whether or not the green liquid is real or not, as Katniss is hallucinating at the time. They were also said to sometimes burst or fizzle, but this too was described while Katniss was hallucinating so it's unknown to be true. The stings themselves are extremely painful, and remain so for days unless treated. If you are stung many times in a short period of time, you can die from excess poison.

Excess poison isnt important

The poison is important Peter.