Magnolia Officinalis Side Effects

Magnolia officinalis, also known as houpu, is a flowering tree native to China. Its bark is used in traditional Chinese medicine as well as in other forms of herbalism, and is often used to treat stress and, more recently, bad breath. While magnolia bark is used in a variety of herbal supplements that are readily available over the counter, there are possible side effects and drug interactions of which consumers should be aware.

Reported Side Effects

• Studies on magnolia officinalis have shown few side effects, and it is not entirely clear that the the reported symptoms are actually connected to magnolia use. The symptoms reported included tiredness, sexual problems, thyroid problems, headache, shaking hands, and heartburn. While magnolia is not considered to be a significant allergen, some people have reported allergic reactions with its use.

Pregnancy and Breastfeeding

• There is some evidence that ingesting magnolia officinalis can cause miscarriage, so if you are pregnant, or hope to become pregnant, avoid using magnolia bark. Because there isn't enough research to demonstrate its safety during breastfeeding, nursing mothers should continue to avoid magnolia bark after giving birth.

Drug Interactions

• If you are using magnolia officinalis, or are thinking about using it, be aware that it can have negative interactions with drugs that you might be taking. Because magnolia can have a a sedative effect, it can accentuate the effects of alcohol and sedatives. Because magnolia can interact with anesthesia, avoid using magnolia for at least two weeks prior to surgery.