Short answer: There is no well-known, officially published clinical trial specifically testing “Vilitra 60” as a brand dose in major regulators (like FDA/EMA databases). What is actually clinically tested? The active ingredient in Vilitra is vardenafil (same drug used in the original branded medicine Levitra). Vardenafil has been extensively clinically tested and approved internationally for erectile dysfunction. Clinical trials include large studies (thousands of men) showing safety and effectiveness for doses typically 5 mg, 10 mg, and 20 mg Standard medical dosing guidelines generally do not include 60 mg vardenafil in approved prescribing information So what about Vilitra 60 specifically? “Vilitra 60” is a high-strength generic formulation marketed in some countries (mainly India/online pharmacies) It is usually not part of regulated clinical trial dosing ranges There is no strong independent clinical evidence that 60 mg is tested for safety/efficacy in standard trials Important implication Even though vardenafil is clinically proven: Higher-than-approved doses (like 60 mg) are not well studied They may increase risk of side effects such as: Low blood pressure Severe headache/dizziness Heart-related strain Priapism (prolonged erection) Bottom line ✔ Vardenafil itself = clinically tested and approved ✔ 10–20 mg doses = evidence-based standard Vilitra 60 mg specifically = not a standard clinically validated dose in major regulatory trials If you want, I can compare Vilitra 20 vs 40 vs 60 in terms of safety and real-world effectiveness so you can understand why higher doses are usually avoided.