Gentian is generally well-tolerated when taken with other herbs and used in recommended amounts. However, some people may experience stomach discomfort and allergic skin reactions.
Gentian may increase the effect of drugs that lower blood pressure (e.g., captopril, valsartan, amlodipine).
Do not use gentian if you have a stomach or intestinal ulcer, stomach irritation, or inflammation.
If you have low blood pressure, talk to your health care provider before taking gentian. You should discontinue the use of gentian at least 2 weeks before surgery, due to its blood pressure effects.
Contact your health care provider if your symptoms persist or worsen.
Contact your doctor before using gentian if you are pregnant or breast-feeding.
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.