Question: how to use boric acid suppositories for bv?
Answer: Wash and dry your hands.
Lie on your back with bent knees, or stand with your knees bent.
Gently insert one capsule as far as it will comfortably go into your vagina. ... 
Dispose of the applicator (if you used one). ... 
You might want to wear a panty liner to absorb any discharge.