Pregnant women are susceptible to shingles. Fortunately, shingles in pregnancy is very rare. The antiviral medications described previously are considered safe to use in pregnant women, as are most pain-relieving drugs. Women should not take nonsteroidal anti-inflammatory medications such as ibuprofen (Advil) or naproxen (Aleve) in the later stages of pregnancy , but acetaminophen (Tylenol) is considered safe. Having chickenpox during pregnancy has the potential to cause birth defects, depending upon when in the pregnancy the infection occurs. The risk of birth defects is believed to be lower with shingles than with primary chickenpox infection.