When parasites become too large and youve done every protol and been on meds for years and still the large ones are not hindered there is only extraction to consider. Do u have a good doctor? If not then look up " worm self extraction" on utube. There is NO Cure for the huge beasts. Only yrs of taking meds and herb to kill the larve the large ones spawn. sadly surgery is the only way to beat the large ones. Whatever meds/herbs dont kill after a year of treatments u are stuck with.