Traditional Herbal Medicine Registration (THMR).

The following notes apply to the species of this plant. In traditional herbal medicine: Lesser celandine has been used for thousands of years in the treatment of haemorrhoids and ulcers[254]. It is not recommended for internal use because it contains several toxic components[254]. The whole plant, including the roots, is astringent[4, 165, 238]. It is harvested when flowering in March and April and dried for later use[4]. It is widely used as a remedy for piles and is considered almost a specific[4, 238]. An infusion can be taken internally or it can be made into an ointment and used externally[4, 238]. It is also applied externally to perineal damage after childbirth[238]. Some caution is advised because it can cause irritation to sensitive skins[244].