Vidalista 40 mg is a higher dose of Tadalafil, the same active ingredient found in Vidalista 20 mg. It works in the same way to treat erectile dysfunction (ED) by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. Like other forms of Tadalafil, it typically takes about 30 minutes to start working and can remain effective for up to 36 hours. These can include headaches, indigestion, back pain, or muscle aches. In rare cases, more severe side effects can occur, so it’s important to follow your doctor's advice and report any unusual symptoms. Higher doses like Vidalista 40 mg may increase the risk of side effects, so it’s crucial to use it under medical supervision.