however my dog ate 2 mg of 5meo-amt dissolved in vodka for accurate measurement and said that while he tripped his tail off and had a great time for about 4 hours untill the monster headache from hell came on and lasted another 12 hours and vomiting and diarea at the same time wich were not fun. he also tried at .5 mg dosage and got the same exact effects. The headache was the worst of my dog's life and he say's he would rather eat shrooms or cacti.