^I have never heard of that method to come off of HPPD.
Most people will tell you eat healthy, sleep well and be patient. Plus ive heard proper HPPD is rare, but i wont say you do or do not have it i simply dont know
I dont actually know what that salt is, could find out but trek. But usually taking upto 8-12 grams of any substance daily is not actually good for you :/
Idk maybe its wonder salt?
Just careful throwing your bodies chemicals around more after throwing them around, this is half the problem with a lot of people. I'll fix this chemical inbalance or perception disorder with something that alters your perception and chemical balance.
Idk forgive me if im wrong and the salt that other guy metioned is actually pure nutrients... But even then you cant even take to much minerals and vitamins...
Anyways i am 100% certain you will be able to find some type of treatment by researching on the internet, if it gets to 3 weeks and its still going maybe see a specialist.