Tadalafil was approved in in the United States for the treatment of pulmonary arterial hypertension [28] and is under regulatory review in other regions for this condition. Some people buy tadalafil online without a prescription. Counterfeit medicines can be very dangerous. Soon, in , ICOS received a patent for compound IC structurally unlike sildenafil and vardenafil , and Phase 1 clinical trials began in You need a prescription from a doctor to buy tadalafil. Tadalafil may not be safe for people with certain medical conditions, including people who have had a stroke , have coronary heart disease or retinitis pigmentosa an eye disease. There are many other treatments for erectile dysfunction.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 find the best price. AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping Available. Brand-name Cialis: Generic Cialis (tadalafil) Daily generic Cialis (tadalafil) Hims: $ per month (5mg) starting at $40 per month (5mg, 10mg, 20mg) starting at .