Filitra 20 typically starts working within 30 minutes to an hour after ingestion, although individual response times may vary. Its effects can last for up to 4 to 6 hours, allowing for a reasonable window of opportunity for physical activity. Filitra 20 should be taken orally with a glass of water, usually about 30 minutes to an hour before anticipated physical activity. It can be taken with or without food, but high-fat meals may delay the onset of action.