Taking this product with any medicine that makes you sleepy can worsen this effect. Ask your doctor before taking 5-HTP with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.
Do not take 5-HTP without medical advice if you are using any of the following medications:
an antidepressant;
carbidopa;
narcotic medicine; or
cough medicine that contains dextromethorphan (DM).
This list is not complete. Other drugs may interact with 5-hydroxytryptophan, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this product guide.
 5-HTP drug interactions (more detail)
