Goldenseal may cause minor or no side effects, but a patient should see their doctor if they experience persistent common drug side effects, such as headaches, stomach upset or drowsiness, explains Drugs.com. People who are allergic to goldenseal may experience itching, hives, difficulty breathing and chest tightness.
Patients take goldenseal to manage conditions such as diarrhea, infections, cold and flu symptoms, cirrhosis and gallbladder inflammation, notes Drugs.com. Those with have suffered high blood pressure problems in the past should not take this medication. Patients who are under prescriptions should also inform the doctor before taking goldenseal, because it may interact with some medications. Additionally, patients who are allergic to any ingredient in goldenseal should avoid it.