Licensed pharmacies operate under strict regulations designed to ensure the quality and authenticity of their medications. Purchasing Cialis from a certified pharmacy means the product has passed quality standards and is approved for sale by relevant health authorities. A prescription is usually required to buy Cialis legally, which not only helps control its distribution but also ensures that its used safely and appropriately. In-person pharmacies provide the advantage of face-to-face interaction with pharmacists, who can answer questions about usage, potential interactions, and side effects.