Cialis (tadalafil) is an oral prescription drug used to treat erectile dysfunction. If you have any allergies to drugs, in case you are taking any herbal or dietary supplements, prescription or over-the-counter drugs, or have a history of eye problems, low or high blood pressure, heart problems, bleeding problems or blood vessel problems talk to your doctor before starting to take Cialis. Use this medicine exactly as directed by your doctor. Do not exceed the dose prescribed. If you experience vision or speech changes, weakness, fainting or confusion you may be having a stroke, which is one of the side effects that may be experienced by patients with heart problems.

If you miss a dose of this medicine and you are going to have sex take the missed dose as soon as you remember. Do not take two doses of Cialis. At least 24 hours must pass between the two doses. In some cases this drug causes drowsiness, dizziness, blurred vision or fainting, these effects being worsened by consuming alcohol. To avoid dizziness, sit down and stand up slowly, especially in the morning. Although you can drink alcohol, avoid consuming more than 5 drinks as some of the side effects can be worsened. Low blood pressure and irregular heartbeat may be the consequences of drinking irresponsibly.