There isn't enough evidence to identify a particular Vilitra 20 pack as counterfeit simply from the product name. The genuine product is listed by Centurion Laboratories as Vilitra (vardenafil) 20 mg, but counterfeit versions can imitate genuine packaging. To check a specific pack, look for: Manufacturer: Centurion Laboratories Pvt. Ltd. Correct batch/lot number, manufacturing date, and expiry date Consistent spelling, printing, tablet appearance, and packaging A legitimate manufacturing licence that can be verified through India's ONDLS system. Purchase from a licensed pharmacy and retain the invoice. CDSCO defines a spurious drug as one that falsely represents its manufacturer or is an imitation/substitute for another drug, and it publishes spurious-drug alerts.