I don't see any risk with the enemas if you do them properly.
I have done them everyday since months. I thank god everyday for them. What the Nystatin enemas are done is to give me my life back. They are the only thing that delivery the medication where the fungal colonies live. There isn't other way at least you take massive doses of Nystatin orally. Dr. Truss used 16 tablets a day ( 8 000 000 of units ) for months.
With the enemas you only need 500 000 units a day and my prognostic is the worst overgrowth will be gone in less than 3 months.
Jorge.