Taking it by mouth can cause side effects such as severe irritation of the stomach and intestines, diarrhea, and irritation of the urinary tract. Liver damage has also been reported.

Is celandine poisonous?

Pharmacology. The whole plant is toxic in moderate doses as it contains a range of isoquinoline alkaloids but there are numerous therapeutic uses when used at the correct dosage. The main alkaloid present in the herb and root is coptisine.

What is celandine herb good for?

Greater celandine is used for various problems with the digestive tract including upset stomach, gastroenteritis, irritable bowel syndrome (IBS), constipation, loss of appetite, stomach cancer, intestinal polyps, and liver and gallbladder disorders.