Spanish fly is the more common name of cantharis. It is actually a beetle that produces an irritant so caustic that it makes the skin blister if exposed to it.
Cantharis has been used for many different disorders such as baldness, rheumatism, and as an aphrodisiac. It can be toxic in high doses and can create abdominal cramps vomiting up blood, pains in the throat and stomach, diarrhoea, kidney damage, convulsions, coma, and death. Homoeopaths prescribe Cantharis for their patients who have symptoms like those above.
This Homoeopathic Remedy May Aid
bladder infections or cystitis
scalds, and blistering second-degree burns.
Cantharis is available over the counter, in liquid and tablet form.
Professional advice is required for each particular ailment and for dosages.