Alcohol, any illegal drugs, cigarettes and birth control pills. Studies have determined that the above substances can result in premature birth, low birth weight and/or increased chance of miscarriage or birth defects.
Discuss all other drugs, over the counter medications and herbal remedies with your obstetrician
Many food supplements have not been adequately studied to determine safety in pregnancy
Doxycycline, Minocin or Tetracycline types of antibiotics
Aspirin, Ibuprofen, Naproxen and 1-day yeast medications
Nitrous Oxide during a dental visit