Does Cialis make you bigger? Is Cialis for men only? Is 20mg of Cialis better than mg of Viagra? By limiting how active PDE5 is, blood can flow into the penis and you get an erection. That means you can have erections whenever you want or need them. Mechanism of action[ edit ] Penile erection during sexual stimulation is caused by increased penile blood flow resulting from the relaxation of penile arteries and the smooth muscle of the corpus cavernosum. When aroused, the blood vessels in your penis dilate.Amazon Pharmacy: Tadalafil (Generic for Cialis, Oral Tablet) Transfer your prescription for Tadalafil (Generic for Cialis, Oral Tablet) on Amazon Pharmacy. FREE SHIPPING for . Transfer your prescription for Tadalafil (Generic for Cialis, Oral Tablet) on Amazon Pharmacy. FREE SHIPPING for Prime Account Returns & Orders. Dosage. The dose of Cialis you need will depend on whether you’re taking it daily or as needed. Daily doses are often between and 5 milligrams (mg). The as-needed dose is usually 10 mg but can range from 5–20 mg. The typicaldose of Viagra is 50 mg. However, the dosage can range from 25– mg.
