Vidalista 60 contains tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor. This class of drugs works by increasing blood flow to the penis, thereby facilitating an erection in response to sexual stimulation. The standard dosage is 60 mg, taken as needed before sexual activity. While generally well-tolerated, it can cause side effects such as headaches, flushing, and dizziness. More serious side effects are rare but can include cardiovascular events, especially if not used appropriately.