Yes I have experimented with them and dont accidently eat too much of an extract or seeds. I accidently consumed roughly 2 oz of seed extract or possibly more due to mis labeling shit... It appeared to be like taking a dozen hits of real acid or more. Took a good year or 2 for the trails and such to fade most of the way. Feels like a shroomy poisonus type trip if consumed in smaller amounts though, almost like everything is drippy, heavy rain on the window kind of drippy with trails on objects. While under the influence of the seeds, these trails were "black" but after the event described above the trails were transparent image stretched from the object. Sort of like the motion blur on video games or looking through dirty glass However from that accident years ago, the only thing I remember while I was on it is busting up laughing uncontrollably for hours on end, while watching as everything in my field of vision was flashing every color of the rainbow very strong in addition to everything appearing to melt right in front of me.
Similar to how a strobe light looks in the dark, but in daylight with every color, changing like 10x a second. Next thing I knew I was sleeping and woke up with trails on everything, which was a lasting effect... It faded most the way after a year or so, but if eyes are tired or looking at bright and or reflective surfaces (car headlights, license plates or other shiny's at night, etc, the trails are still there to this day 6 years later. In normal daylight without intense light reflection I can see perfectly fine though. From experience I'd say 10 or more grams and your asking for trouble and possible lasting effects. My advice is don't do it at all. You have been warned, don't overdose on it. Whether accidental or on purpose, you will be sorry.