There is no fixed standard for how long it takes for flat warts on the face to see results, flat warts on the face to eat levitra may have adverse reactions, levitra has contraindications, should be guided by a doctor to use the drug. The main purpose of taking levitra for flat warts is to regulate the immune function and promote the recovery of flat warts. The actual time of taking it is not certain, it needs to be decided by the doctor according to the degree of the flat warts, the patient’s physical condition, the performance after using the medicine and so on. After taking levitra for flat warts on the face may appear vomiting, nausea, abdominal pain, dizziness, insomnia, fatigue, fever and other abnormal symptoms, early pregnancy, liver and kidney function, hepatitis active, the original schistosomiasis, allergic to the drug is prohibited the drug. When you need to eat levamisole for flat warts on your face, you should be guided by a professional doctor and not use the drug on your own.