CHICAGO — Marine Corps veteran Justin Wigg was suffering from anger issues and other symptoms of post-traumatic stress disorder, but traditional medicine had been little help. So last fall, he traveled to Peru for a treatment that isn’t legal in Illinois — at least not yet. It was a psychedelic, tea-like drink called ayahuasca, brewed from two tropical plants, and it produced hallucinations that Wigg, a Chicagoan, compared to “‘Alice in Wonderland’ meets ‘Fantasia.’” On the second of four ceremonial sessions, he said, he met a spirit figure called Mother Ayahuasca who lifted his burden. “I as…
