Bought on the advice of a friend in association with 3 other products after an infectious episode and not to risk a relapse and antibiotic treatment, I really noticed an improvement and well being sensitive and in a few days use. I think as often with this type of product that improvement is sustainable only as long as one takes the treatment but the format 200 covers a period of 2 to 3 months. full treatment: seed oil courges- roots of nettles -canneberge- epilobe