BTW, Morning Glories are in the Nightshade family.
Actually they are in the Convolvulaceae: mostly, but not exclusively, vines.
If I remember correctly (it's been many years since I got into this and my wife immediately proved to be far better at it) but I believe a tincture from Morning glory flowers in very low dosages could eliminate intestinal parasites, but has to be used with EXTREME caution as the line between killing the parasites and killing the host was so miniscule...
Not sure about other parts of the plant, but the seeds contain LSA, an ergoline alkaloid related to LSD. The presence of LSA could be due to symbiosis with a fungus not unlike Claviceps purpurea - the organism responsible for LSD in rye.
A tincture from the seeds, if properly made, can be used for its psychoactive properties. The effects are subjectively quite different from LSD. Excessive dosage can be lethal indeed.