The homeopathic medicine cantharis is obtained from a vividly green colour beetle called Lytta vesicatoria, which is commonly known as the Spanish fly or the blister beetle.
==Special Precautions of Cantharsis==
*Only homeopathic use !* Do not take homeopathic remedies without first consulting a homeopathic practitioner. Do not take several remedies at the same time as that is often discouraged in homeopathic treatment. Take the recommended dose only and immediately report any changes in condition to your doctor.*The beetle contains a substance called cantharidine which is a powerful irritant if ingested (it is even powerful enough to raise blisters if applied topically) and any significant dose can and will cause kidney damage or even death. Symptoms of poisoning are severe abdominal pain, diarrhea, vomiting, painful mouth and throat and in extreme cases the presence of blood in urine, stools and vomit.
==Benefits and uses of Cantharsis are==
* Acute cystitis : a wonderful remedy for the condition wherein people have a constant as well as urgent urge for passing urine - so intense as if like a violent spasm in the lower abdominal region to release urine from the bladder. Despite the intense urge, the patients are unable to urinate much, but pass only a few drops and that too sluggishly. In addition, the urine may also be hot and contain blood. Such patients usually experience immense pain as well as a burning sensation while passing urine. While these individuals may have a feeling that their bladder has been drained out, the constant urge to urinate does not go away. Such a situation is not only frustrating, but also very painful.