The new Viagra alternative: Venom from a 4-inch spider?

Researchers may have discovered a natural, eight-legged solution to erectile dysfunction

Scientists say the venom from the Phoneutria nigriventer (pictured) could one day be used as a Viagra alternative.
(Image credit: Wikimedia Commons)

Until now, "spiders and penises are two things most people want to keep far, far apart," says Patrick Morgan at Discover Blog. But scientists at the Medical College of Georgia have found that poison from an aggressive Brazilian arachnid can help men achieve a lasting erection, even men who don't respond to Viagra. According to a new study in the Journal of Sexual Medicine, venom from the Phoneutria nigriventer could potentially offer all of Viagra's benefits, with none of its side effects. Here's a guide to this surprising finding:

How on Earth did scientists figure this out?

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