I have done some research on this "brazilian wandering spider" (Phoneutria nigriventer)
Side Effect: Painful bite, High blood pressure,uncomfortable erection, Entire body pain
a substance called PDE-5 breaks down the cGMP and in turn transforms the erect penis into its normal limp state.The most popular erectile-dysfunction drugs.Viagra, Cialis and Levtra work by blocking this party crasher. The spider bite has the same effect.