Consult a health care practitioner if symptoms persist or worsen; before use if you are pregnant or breastfeeding; if you are taking anticoagulants such as warfarin, acetylsalicylic acid, anti-inflammatory or non-steroidal antiplatelet agents; if you have blood clotting disorders; if you are taking prescription drugs or other natural health products as grape leaf may alter their effectiveness.
CONTRAINDICATIONS : Do not use if you are allergic to grapes, its constituents or other members of the Vitaceae family. Some people may experience headaches, dizziness, gastric irritation or itching.