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morning glory seeds I thought were such a beautiful drug. erowid I find is hard to navigate sometimes so I will tell you what I know about them.
only certain kinds work, the best are heavenly blues but if you can't get a hold of them try flying saucers. anyway, the chemical in them that makes you hallucinate is LSA, similar to LSD. what is best is to not eat a long time, all day if you can before you eat them, it's easier to keep them down that way.
the cleaning process is very important. you have to rinse them off in FRESH water, NOT tap water, tap water will kill the LSA. you also have to wash them in dish liquid (literally put them in a container of sunlight detergent or something) and that will get rid of the pesticides which will make it physically possible for you to keep them down. :P after you wash them in dish liquid rinse them again in fresh water. it is also important to either grind them or chew them. I'd suggest drying them out and grinding them because they taste bad, but if you don't want to grind them or don't have a coffee grinder you MUST chew them otherwise you won't get anything from them.
now another important thing, like anything don't take too much, be smart and do them under good circumstances and MODERATION. I told my friend about them and he ended up ODing and getting hospitalized because he took too much, he had around 7 packs of 50, do the math. I'd agree with whoever said 300 or 400 up there.
take these hands and throw them in the river*