Alcohol might increase the likelihood of developing HPPD? This is completely anecdotal, but I've got some slight HPPD (hallucinogen persisting perception disorder) after combining LSA and alcohol. My dose was 250 morning glory heavenly blues, and I started drinking 3 hours after taking the seeds. I might have consumed 10-15 alcohol units during the evening/night.

I advice others to be cautious about this combo.