My seizure was caused by low potassium as well and I've never had one before and I'm 24 now and I haven't had one since thank god. They gave me four potassium pills at the hospital and sent me home and after that I had horrible panic attacks so I had to be put on the Zoloft for the panic attacks and it works but I now feel like a totally different person not because of the Zoloft but because of the seizure and they also said I was epileptic but I've never had one since or before. I also have horrible headaches and they put me on B 12 magnesium to take them all at the same time to get rid of the headaches maybe he should try that because it works.
Potassium lowers blood pressure and is listed on blood pressure medicine as a "Don't take". It also helps with cramps because cramps start like a seizure and go away like a seizure.
When I drink V8 (low sodium bottles only) it has over 800mg of Potassium
in it while the regular bottles have less than 600mg. Potassium is in "No Salt" from Publix and I have replaced all my salt shakers with it.
I don't have cramps any more.
My Pomeranian. since we got him six years ago, has had seizures, sometimes as many as two or three times a day; until
we gave him a part of every banana we ate daily. Bananas have high potassium. His seizures are gone.
We were also told by an old friend who deals professionally in Shetland Sheep dogs that she understood that seizures are often caused by a high level of protein in dog foods. So we also lowered that by just reading the dog food labels and staying around 9% protein. But while the seizures came less often, they did not stop until we added the bananas.
I was advised by my physician to drink 6 oz of Quinine every day. I did for about a year and it stopped the cramps. When I tried "No Salt" instead, I was able to stop drinking the horrible tasting Quinine. A full bottle from Publix still sits in my kitchen unused since last year.
Only thing I can suggest is headaches can sometimes be caused by heart or circulation problems. Since he's on blood pressure meds, could be they aren't doing the job, even tho they were switched recently. It would also be good to know the body chemistry basis for how come his potassium is low all the time, but I don't know what kind of doc can investigate that. That would be my input on this. I hope you can find a specialist who can get a better handle on what's going on, at the very least maybe a cardiologist, and maybe if you do an online search for "low potassium causes," and see if it says a condition that a particular specialist could handle on that issue.