The efficacy of Yosultan is mainly to reduce the effect of vagina and to relieve the symptoms of vaginal dryness, decreased libido and irritability. It is not a prescription drug, so there are no specific clinical statistics to show how effective it is, so it is recommended to buy it carefully. It is also recommended that women with sensitive constitutions, such as those with a history of drug allergies, use it with caution to avoid allergic reactions. In addition, if you feel uncomfortable, it is recommended to go to the hospital to give medical treatment. According to the diagnosis, then use the appropriate drugs for treatment.