Never purchase ED medications from a site or service that doesn’t require a prescription and medical documentation. However, all medications come with risks. Is tadalafil a controlled substance? Since the effectiveless of tadalafil lasts for a long time , it can be taken well in advance to allow for more spontaneous sexual activity over the course of a day or night. Finding an online ED provider can feel overwhelming. It depends on the platform and insurance provider. Make sure to get an estimate of when you can expect your prescription in the mail.Find the best tadalafil or cialis prices near you now with our cost comparison tool and start saving today. The Lemonaid Pharmacy can deliver it to you for $2/pill, including FREE delivery. Our medical team can prescribe it in a 20mg, 60mg or mg dose. To choose the best ED . Cialis (tadalafil): This ED medication works with the same principle as Viagra, but lasts up to 36 hours. It’s available in mg, 5 mg, 10 mg, and 20 mg tablets. .