Boric acid does not kill instantly or on-contact like other fast-acting pesticides or roach sprays. That said, you must be prepared to keep placing out boric acid until the job is done to your satisfaction. This can take a few weeks to a month at the most. 7-2-2012 · Re: Does Boric Acid Expire ??? or become B2O3 after 5-10 years on its own??? When kept at room temperature Boric Acid should last forever. Sometimes though the term " Boric Acid " can be applied to more than one chemical so you should check the. Can boric acid capsules for BV expire ? And if so is it dangerous to use them when expired ? I am 32, 5'4, 130 pounds and have a history or bacterial infections and yeast infections. I use boric acid capsules to help prevent and treat this. I used one then noticed my boric acid was expired. 24-8-2013 · Boric Acid doesn't " expire "- unless it gets Wet. So if Yours has just "clumped up" a little, mash it up as powdery as You can, & use it- Wherever. 5-4-2009 · Does the boric acid lose its potency in the bottle overnight? When you leave it in the cupboard will it be too weak to bite? Did you wish you'd used it sooner or not gotten in a fight? Does the boric acid lose its potency in the bottle overnight/ V.--Veronique Chez Sheep Does boric acid expire ? According to the pharmacy, it does expire , but lasts up until at least the expiration date printed on the side, even if it has been opened long before that date. For vaginal yeast infections (or anything else you're using it for, I suppose), if it stops working effectively before the expiration, talk to your doctor, it's unlikely that the acid itself has changed. Boric acid , also called hydrogen borate, boracic acid , and orthoboric acid is a weak, monobasic Lewis acid of boron. However, some of its behaviour towards some chemical reactions suggest it to be tribasic acid in Bronsted sense as well...Get information on Boric Acid vaginal suppository including uses, dosage details,
medication side-effects and drug. We do not endorse non-Cleveland Clinic
products or services.. Throw away any unused medicine after the expiration
date. Vaginal boric acid is a homeopathic prescription medicine that also contains
probiotics. Do not use this medicine in larger or smaller amounts or for longer
than .