الملخص

Abstract The effect of some natural oils (oil Jawzer, Matricaria chamomilla, Polygonum avicutare, Ammi visnaga, Rubia tinctorum) on dissolving of struvite crystals that formed In vitro was studied. The results showed that jawzer oil is better than other oils on dissolving struvite crystals followed by Matricaria chamomilla while Polygonum avicutare oil have a variable effect on crystal dissolving, Ammi visnaga and Rubia tinctorum oils showed negative effects.