Read More Welcome to Untitled! Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. Finding an online ED provider can feel overwhelming. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. Simply put, Tadalafil lasts for 36 hours and sometimes longer and has the longest duration of action of all the PDE5 inhibitors. Online ED consultations offer privacy, convenience, and affordability while allowing you to quickly get the medications you need—the same day, with some services. When taken at the correct time and paired with sexual stimulation, the erection lasts long enough for successful intercourse.Generic Cialis, or Tadalafil, is available in several doses in tablet form: milligrams (mg), 5 mg, 10 mg, and 20 mg. Depending on the dose for ED, you can use it as needed before sexual. Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic prescriptions Medical Consultation Required: Yes Medications Prescribed: Viagra, Cialis, sildenafil, tadalafil Generic offered: Yes Why We Chose It. Levitra can be taken as either a 5 mg or 10 mg oral tablet. It’s best taken about an hour or so before sex so that it has time to metabolize for better results once you’re sexually stimulated.