There may be rare occurrences of priapism or painful, prolonged erections. Ask your doctor if you are not sure whether any of your medications contain nitrates. Tadalafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow more easily. Take tadalafil at around the same time every day. Shipping: Discreet, fast shipping is a must.Online ED treatment companies, like Roman, Hims, RexMD, and Lemonaid, all offer ED medication Daily Generic Cialis (tadalafil) Generic Cialis (tadalafil) Roman: $90 per dose: $4-$10 per dose. Tadalafil – STADA T20 – 20 Milligramm. Tadalafil, sold under the brand name Cialis among others, is a medication used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. It is taken by mouth. Onset is typically within half an hour and the duration is up to 36 hours. Common side effects include headache, muscle pain, . Tadalafil (Cialis) is used to treat erectile dysfunction (ED, impotence; inability to get or keep an erection), and the symptoms of benign prostatic hyperplasia (BPH; an enlarged prostate) which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency in adult men.