Vidalista 20 requires a prescription because it contains tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED). Prescription oversight is necessary for several key reasons: Medical Safety: Tadalafil affects blood flow and blood pressure. People with heart problems, low blood pressure, or certain other conditions could experience serious side effects if it’s used without supervision. Drug Interactions: Tadalafil can interact dangerously with medications like nitrates, alpha-blockers, or some antihypertensives, potentially causing life-threatening drops in blood pressure. Proper Dosing: Vidalista 20 mg is a high-strength dose. A doctor ensures that this dose is appropriate for the patient, minimizing the risk of side effects such as headaches, dizziness, vision changes, or priapism (prolonged erections). Underlying Health Assessment: Erectile dysfunction can be a symptom of other serious health issues, including diabetes, cardiovascular disease, or hormonal disorders. A prescription requirement ensures a healthcare provider evaluates overall health before starting treatment.