Vilitra 10 (which contains vardenafil for ED) is officially confirmed by the manufacturer and regulated by health authorities. Here’s a breakdown: 1. Manufacturer The pharmaceutical company that produces Vilitra 10 (commonly Centurion Laboratories in India) determines the shelf life based on stability testing under controlled conditions. They test the drug for *****, purity, and safety over time before setting an expiration date on the packaging. 2. Regulatory Authorities Agencies like the FDA (U.S.), EMA (Europe), or DCGI (India) review the manufacturer’s stability data. They ensure the stated shelf life meets safety and efficacy standards. 3. Pharmacy / Distributor Verification Pharmacies and distributors also check the expiration date when storing and selling Vilitra 10 to make sure it is safe to dispense. ???? Practical takeaway: The printed expiration date on the Vilitra 10 box is the authoritative indicator of its shelf life. Don’t rely on unofficial sources or memory; always check the manufacturer’s date. Proper storage (cool, dry place, away from sunlight) helps the medicine remain effective until that date.