Generic Tadalafil 20mg which contains tadalafil, generally begins to work within 30 to 60 minutes after ingestion. Its effects can last up to 36 hours, allowing for a longer window of opportunity for sexual activity compared to other erectile dysfunction medications. Tadalafil helps increase blood flow to the penis, facilitating an erection in response to sexual stimulation. For optimal results, it’s best to take Vidalista on an empty stomach or with a light meal. Individual response times may vary, and it’s important to follow your healthcare provider’s instructions to achieve the best outcomes and manage any potential side effects.