Side effects of catnip may include headache and a general feeling of being unwell (general body discomfort). Large amounts of catnip tea may cause vomiting. In addition, a child experienced stomach ache, irritability, drowsiness, and decreased alertness after consuming a large amount of catnip tea.
Catnip can interact with some medications. It increases the effects of sedativesedativean agent that induces sleep, relaxes, and reduces tension medications including benzodiazepines (e.g., lorazepam, clonazepam), barbiturates (e.g., phenobarbital, thiopental), opiates (e.g., morphine, methadone, oxycodone), and herbal products (i.e., California poppy, St. John's wort, valerian). Catnip may increase lithium levels in the body as well.
You should avoid using catnip if you have too much menstrual bleeding or pelvic inflammatory disease. Avoid using catnip if you are allergic to it.
Catnip may increase the effects of different surgery medications, so you should stop using it at least 2 weeks before your surgery.
Do not use catnip if you are pregnant or breast-feeding.
Consult your health care provider if your symptoms persist or worsen after taking catnip.
Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.