Boric acid suppositories side effects

So I use boric acid suppositories to keep everything smelling good down there lol. Sometimes my ph gets thrown off and they work wonders for me.

My husband has been complaining of a sore throat for the next day the last few times he’s eaten my 🐱 and he only started saying this when I started using the boric acid.

I don’t use them right before sex or anything. It’s typically the day before or 2 days before.

Has anyone else experienced this?