When oral medications might not be safe Check with your health care team before you take any medicine for erectile dysfunction. Tadalafil Cialis. The safety and effectiveness of Cialis when used with other treatments for impotence has not been studied. However, others work on a cash-pay basis and don’t partner with insurance companies. Because patients with recent heart attacks or stroke, heart pains angina , heart failure, uncontrolled blood pressure or uncontrolled irregular heart beats, severe liver disease, and retinal eye problems were not studied with Cialis, Cialis is not recommended for these patients. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications. Insurance: If you plan to use insurance, make sure the online provider accepts it.The most common side effects with Cialis are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get it 12 to 24 hours after taking Cialis. Back pain and muscle aches usually go away within 2 days. Tadalafil Brand names: Cialis, Adcirca. Tadalafil. Find out how tadalafil treats erectile dysfunction, pulmonary hypertension and benign prostate enlargement, and how to take it. 52 10 results for “tadalafil 20 mg tablet” Results Prescription Required Tadalafil (Generic for Cialis) Tablets · 20mg · 6-day supply With insurance est. $ Estimated insurance .