Benefit of IUI-D: Pregnancy
is possible in cheapest way (Other way is ICSI with your husband's sperm if found on testicular biopsy
Disadvantage of IUI-D: Your husband's genetic material is not transmitted to your child. Another theoretical disadvantage might be risk of transmission of infection which is largely avoided by screening donor for infectious diseases which most of sperm banks do.
Medication can't be prescribed online. You may not need any medicines if your periods are regular. Just follicular study
& properly timed IUI might suffice. But if you more success rate by forming multiple eggs on both sides(as your one tube is not healthy) you might ask your doctor to prescribe some medicines.
You can continue Folic acid
, all-9 may not be needed.
Wish you good health.