I was wondering how I could make an herbal medicine against warts to have ready at hand when needed. I usually use greater celandine (Chelidonium majus) yellow sap from the fresh plant right on the warts. If not applied right away when picking the leaves, the sap tends to dry pretty quickly. Is there a way to conserve it somehow, maybe macerating the cut or shredded leaves in alcohol or oil? What would you recommend to get rid of plantar warts? My experience with Chelidonium totally conforms to what you said. It first seems to works, the plantar warts tend to fall off after a while but always come back when only using Chelidonium. Would a combined product of Chelidonium and Thuja (or only Thuja) make sense?