promethazine is generic for phenergan, an anti nausea medicine. it basically just makes you drowsy and relaxed. i had some pills once that were demerol/promethazine pretty good opiate effects. cant give any info on the dosage of pure phenergan syrup though.
darkside Reviewed by darkside on . Why? Ive had promethzine syrup twice (purple,yellow) and went to erowid to look for some info and found nothing WHY. Rating: 5