My dog ate ghost pepper chicken and now he's having massive diarrhea. Help?

My stupid little brother saw our Newfoundland begging for food, and we happened to have leftover ghost pepper chicken from last night. He gave it to him, and 30 minutes later, he got diarrhea all over our rug. Fast forward 15 minutes later, and he's still having diarrhea now. I want to take him to a vet, but... show more My stupid little brother saw our Newfoundland begging for food, and we happened to have leftover ghost pepper chicken from last night. He gave it to him, and 30 minutes later, he got diarrhea all over our rug. Fast forward 15 minutes later, and he's still having diarrhea now. I want to take him to a vet, but it's an hour away and I don't want him to ruin our new Subaru.
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