Can I Take Butterbur During Pregnancy?
Natural butterbur contains toxic alkaloids that can damage the liver and the lungs. Unless these alkaloids are removed (as is done with some high-quality supplements), butterbur supplements should not be considered safe for anyone, especially pregnant women. Furthermore, the toxic alkaloids are thought to possibly increase the risk of cancer or even birth defects.
Some supplements have been purified to remove the toxic alkaloids, thus eliminating the associated risks to a pregnant woman and her fetus. However, other components of the herb may still cause
problems during pregnancy. Until more information is known, even these purified butterbur supplements should not be considered safe for use during pregnancy.
It should never be assumed that natural products are automatically safe for pregnant women. This is a mistake many pregnant women make. Pregnancy often limits the prescription and non-prescription drugs that are available for a woman to take. As a result, pregnant women often seek safe alternatives, sometimes assuming that herbal supplements are always safe. This is simply not the case. Herbal supplements can be marketed in the United States without any evidence that they are safe (or even effective) for anyone, including pregnant women.