Vidalista, which contains the active ingredient Tadalafil, is primarily used to treat erectile dysfunction (ED). While it is generally safe for most individuals, it can have some effects on heart function and rhythm. Vidalista is a phosphodiesterase type 5 (PDE5) inhibitor that works by relaxing blood vessels, improving blood flow. For individuals with pre-existing heart conditions, particularly those with low blood pressure, heart disease, or arrhythmias, it may pose risks. Tadalafil can interact with certain medications like nitrates, leading to a dangerous drop in blood pressure. It may also affect heart rate and rhythm in rare cases, especially when combined with other medications. It's important for individuals with heart conditions to consult their doctor before using Vidalista.