Is Ayahuasca haram?
If it causes one to lose their judgment then it is haram. Anything that causes intoxication (a loss of judgment) in large doses is haram whether taken in large doses or small doses. Ayahuasca contains DMT and from what I found, people recommend not driving a car while on it. This seems to suggest that it is intoxicating and therefore haram.
Update: According to a commenter below, ayahuasca is not intoxicating. If this is true then there would be no issue with using it. I am unable to find any reliable information on the effects of ayahuasca, therefore I cannot state whether it is halal or not.
And God knows best.
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