Saw Palmetto is not suitable for pregnant and breastfeeding women as it may impact hormone levels. As a precautionary measure, it is also not recommended for those who are taking blood-thinning medications such as Warfarin or Coumadin. If you have any underlying health conditions, and are taking certain medications, or are pregnant or breastfeeding, be sure to consult with your healthcare provider before starting a Saw Palmetto supplement regime.