The application of interferon to flat warts is effective, but the effectiveness is limited by a number of factors and varies from person to person. The most important thing to remember is that the interferon is not only a good way to get rid of the problem, it is also a good way to get rid of the problem. The actual interferon has a good antiviral effect, it can effectively bind the cell membrane surface receptors, inhibit intracellular viral replication, inhibit cell proliferation and play the role of immunomodulation, so the interferon has a certain effect on the treatment of flat warts. For more than a year, the stability of the flat warts, if a single use of interferon treatment, the effect is not very ideal, you can use the drug treatment combined with physical therapy way of treatment. If you want to treat flat warts, it is recommended to go to the dermatology department of the professional hospital in time, do not use drugs without authorization, to avoid adverse reactions.