What destroyed Hercules?

Answer 1

After Heracles shot the centaur, Nessus, because he tried to run off with his wife, Deianira, the centaur told her to collect some of his blood. He said if she was ever afraid of losing Heracles love, she should put some of the blood on his tunic and he will love her again. One day when Hercules was at a war, he called home for his best tunic. He wanted to celebrate with his men, but Deianira thought he was dressing up for a women. She painted the blood on his tunic and sent it off to Hercules. When he put it on, his skinned burned. The "love potion" turned out to be a mix of centaur blood and poison from the arrows. Since Hercules was so strong, the poison could not kill him. The pain was so great though, Hercules had his men build a funeral pyre. When Hercules climbed on, they sent fire to it. Before Hercules burned though, he was raised to Olympus, where he was made a god.

Answer 2

A cloak soaked in hydras blood which was extremely poisonous