Ranunculus bulbosus is a herbaceous plant from the buttercup family. The buttercup grows up to 40 cm high. It blooms from May to July with yellow flowers. Found in Europe and North America. Due to its toxicity, the plant is only used in high dilutions in homeopathy. On pastures, Ranunculus bulbosus is also poisonous to horses, cattle, cows and goats in large quantities. The sap contains the non-toxic ranunculin, a glucoside that is converted into the toxic alkaloid protoanemonin. Protoanemonin is found in all buttercups in varying concentrations. Due to its irritating effect on the skin and mucous membranes, it causes redness and itching on contact, and may also cause blisters to form on the skin: buttercup dermatitis
The plant's ingredients have an antibacterial, antipyretic and sedative effect.
Formerly used in folk medicine, today used in homeopathy for neuralgic pain, especially infectious pain such as zoster neuralgia.