Bitter Orange Interactions
Synephrine (one of the components of bitter orange) and many nasal decongestants are chemically related. Taking them together may increase the risk of side effects.
Monoamine Oxidase Inhibitors (MAOIs)
Combining an MAOI with bitter orange can lead to life-threatening reactions. If you take an MAOI, do not take any products that contain bitter orange.
Theoretically, combining bitter orange with a QT-prolonging medication could increase the risk of QT prolongation, a very dangerous irregular heart rhythm (arrhythmia).
It is possible that not every drug interaction with bitter orange was discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about the bitter orange drug interactions that may apply to you.