Baking soda can help, and I have had some positive reports, but Vernal I have to tell you that Simoncini is a self-promoter whose successs are far less than what he claims, but whose book sales and talk show appearances are doing quite nicely - the same as are any other number of people who claim they have found a unique cause and/or cure for cancer.
I have done more than a bit of research into the Italian doctor (where anyone with enough money can buy a diploma) who refuses to reveal where he went to school and who fled Italy after convictions for manslaughter and fraud.
I know that alternative practioners have a history of being persecuted and lied about, but I have also communicated with people who have seen the slick Doctor and there reports are less than kind.
I am not sure what all you have done, but I would suggest cleansing and a fast, followed by healthy and nutritious diet that is mostly raw and which includes a fasting day each week, plenty of sunshine on the skin and indirectly in the eyes (and vitamin D3 of 5000 units per day when you cannot get outside), mild to moderate exercise as you are able, removal of all chemical toxins in your home and workplace, EFT and addressing any emotional stress or past trauma, and making sure you are not deficient in any vital nutrients such as vitamins, minerals, trace minerals and especially iodine and selenium.
But please do not go overboard and just try to take gobs of supplements. First try the general approach and always keep in mind good health starts with a good foundation. Without it, all the supplements in the world may be of no avail.
Such an approach will help correct a great many problems.