Cantharides Tincture
AvoidHerbal Preparation
Cantharides tincture is a solution derived from Spanish fly, traditionally used for its irritant properties.
What is Cantharides Tincture?
Cantharides tincture is a liquid preparation made from the Spanish fly (Lytta vesicatoria), an insect known for its blistering properties. Historically, it has been used in traditional medicine for its ability to cause irritation and blistering, which was believed to stimulate healing in certain conditions. However, its use has largely fallen out of favor due to its toxic nature and the availability of safer alternatives.
Also known as:
Unsure about an ingredient? Scan it instantly.
Try SpoonfulDiet Compatibility
Cantharides tincture comes from the Spanish fly.
Learn more →Cantharides tincture comes from the Spanish fly.
Learn more →This ingredient is generally considered compatible with a Alphagal diet.
Learn more →This ingredient is generally considered compatible with a Dairy Free diet.
Learn more →This ingredient is generally considered compatible with a Gluten Free diet.
Learn more →This ingredient is generally considered compatible with a Fodmap diet.
Learn more →Compatibility ratings are general guidelines and may vary by individual. Always consult a healthcare professional for personalized dietary advice.
Why People Avoid Cantharides Tincture
People avoid cantharides tincture primarily because it is derived from an insect, making it unsuitable for vegans. Additionally, it is known for its toxic properties, which can cause severe irritation and blistering of the skin and mucous membranes. There is also a significant risk of poisoning if ingested. As a result, its use is rare and typically limited to historical or niche applications under strict medical supervision.
Potential Reactions
- Severe skin irritation
- Blistering
- Gastrointestinal distress
- Renal failure
This information is for educational purposes only and should not be considered medical advice. Individual reactions can vary. Consult a healthcare professional if you have concerns about specific ingredients.
Spoonful flags ingredients that don't match your diet.
Get the AppBrowse products that match your diet.
Explore ProductsFrequently Asked Questions
Your Personal Ingredient Scanner
Spoonful helps thousands of people with dietary restrictions shop safely. Scan barcodes, read labels, and find safe alternatives — all in one app.

Take the Guesswork Out of Grocery Shopping
Join thousands who use Spoonful to find foods that match their dietary needs.