Tadarise Pro 20 mg, which contains Tadalafil as its active ingredient, typically begins to lose its potency once it reaches its expiration date. The expiration date is determined based on stability testing performed by the manufacturer. Beyond this date, there is no guarantee that the Tadarise Pro 20 mg medication will be as effective or safe to use. Factors that can affect potency before the expiration date include storage conditions. Tadalafil, like many medications, should be stored in a cool, dry place away from direct sunlight and moisture to maintain its effectiveness. Exposure to extreme temperatures or humidity can accelerate degradation and reduce potency. If you are unsure about the potency of your medication or if it has expired, it is recommended to consult with a healthcare provider or pharmacist for guidance. They can provide advice specific to your situation and ensure that you are using medications safely and effectively.