Prescription medicine Vidalista Professional is available for the treatment of erectile dysfunction in men. It works by increasing blood flow to the penile area. This helps men maintain and achieve an erection. You can take a full Vidalista Professional along with a glass of water. It is recommended to take this medication 30 to 60 minutes before having sex. Even if you miss a dose, you should not take the prescription more than once a day. This drug is not recommended for use by women or children under the age of 18. The following medical conditions, drugs, and foods have been shown to interact negatively with tadalafil. This drug must be kept in a cold, dry place.