The majority of Vidalista Professional 's patients are men with erectile dysfunction. Take it half an hour to an hour before you want to have sex. This allows the medication enough time to be absorbed and start working. Before using Vidalista Professional, alcohol and high-fat meals should be avoided as they may reduce the medication's effectiveness. Avoiding these substances is advised when using the prescription. As soon as possible, it should be taken orally with a full glass of water. Vidalista Professional side effects include headaches, nausea, stuffy nose, back pain, impaired vision, and flushing in the face, neck, or chest.