Rifaximin (Xifaxan) is an expensive drug used to treat traveler's diarrhea and irritable bowel syndrome with diarrhea. It is also used to prevent hepatic encephalopathy, a brain disorder that can occur due to severe liver disease. This drug is more popular than comparable drugs. There are currently no generic alternatives to Xifaxan.
I recommend to patients over age 50thst they consider doing Pap smears every three years. If they are over age 65 with no history of cervical cancer can stop having Pap smears. Women without a cervix and no previous history of cervical cancer can stop having Pap smears done following a hysterectomy. So, to answer your question, I would advise a 73 year old woman in good health with no prior history of cervical cancer and low risk factors for STD infection to stop having Pap smears.
After age 21, women should have a Pap test every two years, instead of every year. At age 30, if a woman has no history of cervical cancer and has had three normal Pap tests in a row, she can be screened every three years, rather than every two to three years.Health.com) -- Young women should have their first Pap test no sooner than age 21, regardless of when they become sexually active, say new guidelines from the American College of Obstetricians and Gynecologists.