I used premade suppositories from online 4 times in 2 weeks & suddenly had terrible stomach cramps, nausea, no interest in eating, joint pain, inflammation & twitching, feet swelling. Thought it was RA and/or diabetes/salt intake, had bloodwork and it was normal. After about a month and throwing away the boric acid it went away. I'm not on any prescriptions & was taking no new supplements/vitamins.
Please be careful about the Boric Acid....it really only helps with a Yeast Infection...from my experience.