All PDE5 inhibitors, including Viagra and Cialis, require a valid prescription regardless of the pharmacy or provider. Taking generic ED medications is an effective way to save money without sacrificing quality. During the pandemic, rules prohibiting providers from prescribing these types of drugs without seeing a patient in person were waived. Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours. What Are the Symptoms of Erectile Dysfunction? It’s available in 10 mg and 20 mg tablets.Cialis (tadalafil) is a prescription medication for those with erectile dysfunction. Many providers sell Cialis online — learn about the safest and most discreet providers here. Here are some details about Cialis: Drug form: oral tablet. Generic version: tadalafil. Read on to learn about Cialis and cost, as well as how to save money on prescriptions and . Cialis is a prescription drug used to treat erectile dysfunction and benign prostatic hyperplasia. Learn how to lower long-term drug costs and more.