If you don't have Andreas book Timeles Secrets etc you should get it, he has answers to so many problems. I don't know your problems, but he has an answer for almost everything and he explains his views so well. He writes about the peroxide but for the flu and colds.
I thought as long as it 35% that it would not make a difference what brand. This just a guess on my part.
On his website, click on top of page, under suppliers, you might check if he has any suggestions. I can't remember if it is there.