Vidalista 5 is a medication primarily used to treat erectile dysfunction, containing the active ingredient tadalafil. Normally, a doctor would not recommend doubling the dose of Vidalista 5 mg without specific instructions, as it could increase the risk of side effects and complications. However, in some cases, a doctor might adjust the dosage based on individual factors such as the severity of erectile dysfunction, the patient's response to the medication, or other medical conditions they may have. It's crucial to follow your doctor's advice and not self-adjust the dosage of any medication. If you feel like the current dosage isn't effective, consult with your doctor for appropriate guidance.