Yes, I have a suggestion.
Try a product called "Stonebreaker". The only brand I have used is called "Herb Farm". I know it works so try that one.
2 years ago I had a BP of 220/150 for months. I would wake at night with a heat flash, sweat and then my heart and colon would both pound. I had to do coffee enemas to get my colon to stop pounding, and drink straight lemon juice and lime juice to get my right side (descending colon?) to stop pounding. this happened every damn night, its was torturous, and never seemed to end.
I still have three tumors (right side rear neck, Right hand middle finger, left hand middle finger) all are all about 66% smaller than back then so I must be doing something right.
I think, 2 years ago I was getting a bad kidney problem, but I had no pain or obvious kidney issues. I did have one weird issue. Get your dad some colored underwear,(Blue, Red, green, any dark colors) and see if he leaks, if it stains or bleaches, the front of his underwear, that was common on me then. I might could probably have bought some sulfite tests strips and typical PH test strips, but I had no idea what to try back then. You could try that for $40 and it might tell you something.
You could also get your dad The Great Plains Laboratory, Inc. "organic acids test" (OAT) -urine test and you'd know what his body was dealing with and the might show you the root cause of the issues. Read my "parasite" and "fenbenzadol and Ivermectin" posts. My "introducition" post listes what I found in my urine, mostly mold byproducts.
I would also try your dad on about 5 drops of turpentine 3x day and see if that helped. Then try some other anti-funguals. Cancer is fungus. The die off overlaods your organs, thats why hes stuck at a certain level of MMS. Eat No sugar! Use Tri-salts soda 3x day, this is in my posts here somewhere. Read the "Cancer" posts about the baking soda therapy, but I switched to "tri-salts" soda (Pot, Cal and sodium) because its lower in sodium, and thats important if you are having kidney issues.
I have an idea that if Id had found the "Stonebreaker" back then that I could have dropped my BP, but Ill never know now.
Just this week I tried some "Stonebreaker" and the next morning I peed the foamiest pee you've ever seen, foamed up like the head of a bear. So I looked it up and this is common with kidney issues. The stonebreaker is helping my kidney function. Your dad might have over saturated with protiens (from die off) overloading his kidneys. If he sees that white foam on the toilet water he'll know hes passing proteins. He'll want to get a Glomerular Filtration Rate (GFR) blood test (dont let your dr just interpret kidney function using only creatinine level, you need that GFR too) If dad really wants to know whats going on.
Still hes probably going to have to heal himself. I know I'm either going to figure this out or not, but no Dr is going to save me.
The other thing I would try. Did he do the DMSO skin test and it never burned him, at all? If so thats good. DMSO burns me like a fire, I think thats because I'm sulfur deficient. If hes stable taking DMSO then try him on lots of Turmeric curcumin (aim for 2-3 grams) and melatonin ( some people go really really high, I stick to 6mg), and can he still eat meat? If so eat dark meat chicken, but not lots until he get his kidneys working really good. If hes not getting burned by the DMSO in any skin location, and he can eat lots of foods high in sulfate, then hes probably got a parasite or a kidney issue (methylation is done by the kidenys, but the transfer of your toxic load also takes place in the colon and small intestine, you need it all to get nontoxic.
If he sees dark urine hes metabolizing protien and needs to consume more carbs to try to stop that protein catabolism. Get his testosterone and Cortisol tested.
If you have a toxic load problem, the old rule was to involve your colon. Read a site called "Mercury Free kids". I might try that again. (I enemad some Epsom for a while, but Im not sure about it now. I just eat turmeric instead). If you only use your kidneys, you'll overlaod your methylation and kidneys and end up on dialysis, so I try to use my coclon for as much detoxing as I can. Do enemas, (I know they are unpleasant, but so is dialysis). I enema 2-3 tsp instant coffee, 1gm turmeric curcummn, im at 2ml CDH, I also add a tiny bit of sea salt, and a gram of chlorella, and some charcoal. Every now and then I just do the CDH, and sometimes I just do some Probiotics.
As of yesterday I could not retain the enema, for the first time since I changed from using MMS to CDH in the enema. MMS burns in an enema, CDH really doesn't, most of the time. This has happened a few times before, Im going to try again here in about 15 min, so I'll see what happens. I want my kidneys, just encase I manage to recover from this health disaster, so I will keep doing the enemas.
Good luck, tell your dad I said Hi!