If blasto is the culprit then these will not come out with generalized parasitic treatments. ADP is good stuff but I would be suspicious of it killing it by itself. This is given from reading countless reports of protozoa infections. Most doctors are not well versed in treating stubborn infections so keep an open mind but stick to proven therapies.
If you want to stay on the natural path then you can look at caprylic and monolauric acid which is derived from coconut oil or there are some super concentrates of coconut oil (bulletcoffee people). I have read reports of it killing stubborn protozoa infections and it has the ability to kill other pathogens.
Lactoferrin is a naturally produced protein and can be supplemented as a dietary supplement. It has antiprotozoa activity