Vidalista CT 20 mg should be taken 30 minutes to 1 hour before sexual activity. Since it is chewable, it can be chewed directly, making it easier for individuals who have trouble swallowing pills. It can be taken with or without food, but heavy or fatty meals may delay the onset of action. Typically, only one tablet should be taken within a 24-hour period. Common side effects may include headaches, flushing, nasal congestion, indigestion, and dizziness. Rare but serious side effects like prolonged erections (priapism), chest pain, and vision changes may occur.