Stuff that would fit something more old school in style. In other words, don't have the concoction simply heal or harm for some numerical value on some stat or attribute, like newer editions do. Looking for the oddball shit, like "Halts male pattern baldness, with the potential side effect of turning your fingernails purple." I'm using LOTFP, but anything along that line that can be ported over to an older DnD style game would be much appreciated.
Even more of a bonus would be a list of places where to harvest some of the ingredients, like "The flower blooms only on the full moon if the full moon falls on the same day as the summer solstice." Or, "Must be extracted from the brain of a living Unnderhuld, and there is a 10% chance upon extraction that the juice reacts violently with the air, causing noxious fumes..."
That sort of thing. Thanks!