Nymphaea lutea
Nymphea alba
Homeopathic remedies are prescribed on the basis that in a tiny dilution like cures like, so while very dilute Nymphaea lutea may help, unprocessed Nymphaea lutea may be best avoided.
Below are the main rubriks (i.e strongest indications or symptoms) of Nymphaea lutea in traditional homeopathic usage, not reviewed by the FDA.