Follow your doctor’s orders or the directions on the label. Keep from freezing. Angina severe chest pain or Arrhythmia irregular heartbeat , uncontrolled or Heart attack within the last 3 months or Heart failure within the last 6 months or Hypertension high blood pressure , uncontrolled or Hypotension low blood pressure or Retinal disorders eye problem or Retinitis pigmentosa an inherited eye disorder or Stroke, recent history of—Should not be used in patients with these conditions. Age greater than 50 years or Coronary artery disease or Hyperlipidemia high lipids or fats in the blood or Hypertension high blood pressure or Low cup to disc ratio eye condition also called “crowded disc” or Smoking—Use with caution. Do not drink excessive amounts of alcohol eg, 5 or more glasses of wine or 5 or more shots of whiskey when taking tadalafil. Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears.Typical starting dosage: mg per day. Dosage increases: Your doctor may increase your dose to 5 mg per day, depending on how well tadalafil is working for you and how well your body reacts to it.  · Cialis (tadalafil) is prescribed to treat erectile dysfunction and symptoms of benign prostatic hyperplasia. ( mg, 5 mg, 10 mg, 20 mg) Cialis tablets come in four strengths: milligrams. Cialis and generic tadalafil are available in four different strengths— mg, 5 mg, 10 mg and 20 mg—but which one should you take? If you’ve never tried Cialis before, your doctor will likely start you on a low dose, like mg or 5 mg.