Vidalista is a brand marketed as containing tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor used primarily to treat erectile dysfunction (ED). Some tadalafil products are also used to manage symptoms of benign prostatic hyperplasia (BPH). Vidalista is available in different strengths and formulations, so the exact dosage should be confirmed from the product packaging. Tadalafil works by increasing blood flow to the penis when sexual stimulation occurs, helping men achieve and maintain an erection.