Side Effects
This herb is very unsafe when taken orally. Liver damage has been reported even on short-term normal doses. Its use before driving or operating machinery should be strictly avoided. Side effects include nausea, dizziness, drowsiness, headache, mouth numbness, severe allergic reactions, weight loss, blood in the urine, changes in vision, enlarged pupils, lack of coordination, muscle spasm or weakness, puffy face, red eyes, dry or scaly skin, yellowing of skin or nails, and shortness of breath.