B No evidence of risk in humans Based on FDA pregnancy categories Do not start or stop taking tadalafil during pregnancy without your doctor’s advice. Stop using tadalafil and call your doctor at once if you have: heart attack symptoms–chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating; vision changes or sudden vision loss; ringing in your ears or sudden hearing loss; or an erection is painful or lasts longer than 4 hours prolonged erection can damage the penis. Tadalafil stops the breakdown of a chemical responsible for relaxing muscles. Resources and support See the Healthy Male site for more information about erectile dysfunction and its treatment. It may not be safe to breastfeed while using this medicine. This leads to shortness of breath when exercising or completing regular daily activities. Take both tablets one after the other.Learn more about Cialis oral. 1. This is a generic drug. The average cost for 30 Tablet(s), 5mg each of the generic (tadalafil) is $ You can buy tadalafil at the discounted price of $ by using the MDRx coupon, a savings of 93%. Even if this drug is covered by Medicare or your insurance, we recommend you compare prices. There are many ways to save on Cialis, which is available as both a brand-name and generic medication. Save with GoodRx. GoodRx can help you save over 97% . Generic versions of Cialis that are FDA-approved are equally as effective and safe as brand-name Cialis. Generic versions are often less than half the cost. Last medically reviewed on November