If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately or get emergency medical treatment, and avoid sexual activity until your doctor tells you otherwise. CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with any nitrate medication. If you ever need emergency medical treatment for a heart problem, the health care providers who treat you will need to know when you last took tadalafil. Cialis As Needed will be prescribed in doses of 5 to 20 mg. Being a treatment product, the Cialis free trial offer is primarily aimed at winning the consumers’ confidence in the oral drug. Does Cialis Offer a Free Trial? To find out if you may be experiencing symptoms of Erectile Dysfunction, take our quiz.Official Free Samples. Cialis is the branded version of Tadalafil that’s available to buy from numerous pharmacies. The easiest way to get the free sample is via free Cialis coupon codes. Like what you’ll find on various coupon sites like In the past Cialis site use to give a voucher and, with the prescription of your Dr. the pharmacy will give for free the Cialis as prescribed by your Dr. I had couple times used this voucher but now I verified again and . Generic Cialis is called tadalafil, which is the active ingredient in Cialis. Cialis is Food and Drug Administration (FDA) approved to treat erectile dysfunction (ED) and benign prostatic.