Cialis Precautions

Before taking tadalafil,

• tell your doctor and pharmacist if you are allergic to tadalafil or any other drugs.
  
  
• tell your doctor and pharmacist what prescription and nonprescription medications you are taking especially medications for high blood pressure; medications to treat an irregular heart rate; alpha-blockers such as terazosin (Hytrin), tamsulosin (Flomax), prazosin (Minipress), doxazosin (Cardura), and alfuzosin (Uroxatral); and medications called "nitrates" such as isosorbide (Imdur, Ismo, Isordil) or nitroglycerin (Nitro-Bid, Nitrostat). Also tell your doctor and pharmacist if you take erythromycin, itraconazole (Sporanox), ketoconazole (Nizoral), phenobarbital, rifampin (Rifadin, Rimactane), ritonavir (Norvir), indinavir (Crixivan), any other medications to treat impotence, or any vitamins or herbal supplements.
  
  
• tell your doctor if you have or have ever had an erection that lasted more than 4 hours; stomach ulcers; bleeding disorders; heart, kidney, or liver disease; a heart attack; irregular heartbeats or heart rate; angina; a stroke; high or low blood pressure; sickle cell anemia; leukemia or other blood cancers; conditions affecting the shape of the penis (for example, angulation, cavernosal fibrosa, or Peyronie's disease); or a rare genetic eye condition known as retinitis pigmentosa.
  
  
• if you are having surgery, including dental surgery, tell your doctor or dentist that you take tadalafil.
  
  
• tell your doctor if you use illicit or recreational drugs called "poppers" such as amyl nitrate or butyl nitrate.
  
  
• tell your doctor if you have been previously told by a health care provider to not be engaged in sexual activity because of your health condition.