Cantharis (Spanish fly)
Cantharis vesicatoria

A powerful remedy for kidney stones with intense burning, cutting pain during urination, constant urging, and blood-tinged or scalding urine. The pain is raw and burning, and the person may be restless and irritable from the discomfort.
Key indications
- Best for: Intense burning and cutting pain during urination
- Constant urging to urinate with scanty, scalding urine
- Blood in urine with kidney stone irritation
- Raw, burning discomfort in the bladder and urethra
- Restlessness and irritability from burning pain
Before and during urination, coffee, cold water, touch
Warmth, lying quietly, passing urine once started
200C every 30 minutes during acute burning and colic; taper as symptoms improve.
General guidance only. 200ck may be substituted for 200C potencies. Stop the remedy upon significant improvement. If no improvement after 2-3 doses in acute cases or after 4-6 weeks in chronic cases, try a different remedy. Consult a experienced practitioner if you feel you need additional help for serious or persistent symptoms.