Tadfil 20 mg (tadalafil 20 mg tablets) is during storage, the key points are: Active ingredient: tadalafil 20 mg. 1 1mg Recommended storage: below 30°C for Tadfil 20 mg according to the product listing. 1 1mg Official tadalafil tablet labeling commonly specifies 20–25°C, with permitted excursions to 15–30°C. D DailyMed +1 Keep the tablets protected in their original packaging, away from excessive heat and moisture. Do not use past the expiry date. Stability beyond the manufacturer's labeled expiry date cannot be assumed, even if the tablet looks normal. If you're asking about whether Tadfil 20 mg remains chemically stable for 1, 2, 3, or 5 years, I can explain the tadalafil tablet stability data (assay, degradation products, dissolution, and storage conditions) in more detail.