What I do is taking borax in the evening; last thing I do before bedtime. Because it is very alkaline and I don't want it to interfere with the stomach acid and what I eat during the day.
Together with vit C and magnesium. I took it every day for a year or so; now once or twice a week. Vitamin B is important when taking borax in these amounts. Liquid ones are preferred taken early in the day. Iodine; you may come to the point where you don't count drops; only droppers full. Much easier:)