What is Cialis (tadalafil)

Cialis is an oral drug approved for the treatment of Erectile Dysfunction (inability to reach or maintain an erection). In USA and UK, the drug was approved in 2003, and became the 3rd approved medication for ED treatment (after Viagra and Levitra). Brand Cialis is manufactured by Eli Lilly.

Tadalafil, an active ingredient in Cialis, belongs to a class of drugs called PDE5 inhibitors. Cialis acts by relaxing penile muscles and increasing a blood circulation to the penis.

During clinical trials, Tadalafil demonstrated effectiveness in 88% of patients, including males, diagnosed with diabetes, high blood pressure, high cholesterol, and atherosclerosis.

Cialis helps achieve or sustain an erection when only combined with a sexual stimulation. Without sexual stimulation, the drug does not work.

What Does It Look Like?

Generic Cialis is supplied in a film-coated tablet form. Each tablet is yellow and has an almond shape.

There are four doses available: 2.5 and 5 mg (Cialis for Daily Use) and 10 mg and 20 mg (36-hour Cialis).

Each tablet is imprinted with C20/C10/C5/C2 ½ on it, according to the dose.

How to Take?

  1. 1- Cialis for Daily Use (a single 2.5 or 5 mg tablet) can be taken every day at about the same time. This low dose formulation of Cialis ensures that you will be prepared for any spontaneous sexual activity.
  2. 2- 36-hour Cialis (a single 10 or 20 mg tablet) should be taken as needed, 30-60 minutes before a sexual intercourse. The effects will last up to 36 hours.

Cialis can be taken with or without food. Ensure that 24 hours passed before taking another dose.

Do not take Tadalafil with more than 5 glasses of alcohol, because this may lead to a decrease in blood pressure.

Safety Information

If you have allergies to tadalafil or similar drugs, you should avoid taking it. Tell your doctor about any drug allergies you have.

If you take any nitrate drugs (isosorbide dinitrate, isosorbide mononitrate or nitroglycerin), you are advised not to take Cialis, because the combination of these drugs can cause a dangerous decrease in blood pressure which can lead to a stroke or a heart attack.

Cialis (or any other PDE-5 inhibitor) can decrease blood flow to the optic nerves, causing a sudden vision loss. This is an extremely rare side effect, most likely in individuals who have diabetes, high cholesterol, heart disease or those who already have existing eye problems, or are over 50 years old and are smokers. If you experience sudden vision loss when you take Cialis, make sure to get medical help immediately.

Tell your doctor about any other medical conditions you have or if you had a history of: stroke or heart attacks, chest pain, high blood pressure, liver disease, hemophilia or other blood disease, ulcers; physical deformation of the penis; leukemia, anemia or other blood cell disorders. If you have any of these, your doctor may lower your dose to 5 mg or monitor your condition more closely.

What are Side Effects?

Some side effects that may be associated with intake of Tadalafil include nasal congestion, diarrhea, upset stomach, and headache. However, these side effects are rare and should disappear in a few hours.

If these side effects persist or you experience other more serious side effects, stop the use of Cialis and consult your physician.