What is Cialis ?

Drug name: Cialis.
Generic Name: tadalafil
Active Ingredients: Tadalafil

Therapeutic actions: Tadalafil relaxes muscles within the penis. This allows increased blood flow into the penis, necessary to achieve and maintain an erection.

Indications: Tadalafil is used to treat erectile dysfunction (impotence).

Contraindications and cautions:

A small number of patients have lost eyesight in one eye after taking tadalafil. This type of vision loss is called non-arteritic anterior ischemic optic neuropathy (NAION). NAION causes a sudden loss of eyesight because blood flow is blocked to the optic nerve. It is not clear at this time if tadalafil causes NAION. NAION also happens in patients who do not take this medicine. People who have a higher chance for NAION include those who:

have heart disease;
are over 50 years old;
have diabetes;
have high blood pressure;
have high cholesterol;
smoke;
have certain eye problems

Stop using tadalafil if you have any loss in your eyesight and seek medical help right away.
Do not take tadalafil if you are taking any of the following medicines:
a nitrate such as nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, Minitran, Deponit, Transderm-Nitro, others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), isosorbide mononitrate (Imdur, ISMO, Monoket), and others;
nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers");
an alpha blocker (other than tamsulosin (Flomax) 0.4 mg once a day) such as doxazosin (Cardura), guanadrel (Hylorel), prazosin (Minipress), terazosin (Hytrin), alfuzosin (Uroxatral), and others.
Taking tadalafil with any of these medications may cause very low blood pressure, possibly resulting in dizziness, fainting, stroke, or heart attack.
Contact your doctor or seek emergency medical attention for any erection that lasts longer than 4 hours. A sustained erection can damage the penis.
Refrain from further sexual activity and notify your doctor it you develop dizziness, nausea, or angina (pain, tightness, discomfort, numbness, or tingling in the chest, arms, neck, or jaw) during sexual activity.
Tadalafil is usually taken when needed before sexual activity. The effects of tadalafil may last for up to 36 hours or more. Your doctor will determine how often you can take tadalafil. Do not take tadalafil more often than is directed by your doctor.

Adverse effects: The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
If you experience any of the following serious side effects, stop taking tadalafil and seek emergency medical attention or contact your doctor immediately:
an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
chest pain or irregular heartbeats;
dizziness, nausea, or angina (pain, tightness, discomfort, numbness, or tingling in the chest, arms, neck, or jaw);
swelling of the ankles or legs;
shortness of breath;
prolonged or severe dizziness;
a prolonged (lasting longer than 4 hours) or painful erection.
Other, less serious side effects may be more likely to occur. Continue to take tadalafil and talk to your doctor if you experience
headache;
indigestion;
back pain;
muscle aches;
flushing;
stuffy or runny nose;
temporary blue tint in vision or difficulty telling the difference between the colors blue and green (uncommon).
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

The side effects listed above may not include all of the side effects reported by the drug's manufacturer.

Interactions:

Tadalafil should not be taken with excessive amounts of alcohol (e.g. 5 or more drinks). Excessive alcohol may increase the risk of headache, dizziness, increased heart rate, or low blood pressure when tadalafil is taken.
Grapefruit and grapefruit juice may interact with tadalafil. The interaction could lead to potentially adverse effects. You should discuss the use of grapefruit and grapefruit juice with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.
Do not take tadalafil if you are taking any of the following medicines:
a nitrate such as nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, Minitran, Deponit, Transderm-Nitro, others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), isosorbide mononitrate (Imdur, ISMO, Monoket), and others;
nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers");
an alpha blocker (other than tamsulosin (Flomax) 0.4 mg once a day) such as doxazosin (Cardura), guanadrel (Hylorel), prazosin (Minipress), terazosin (Hytrin), alfuzosin (Uroxatral), and others.
Taking tadalafil with any of these medications may cause very low blood pressure, possibly resulting in dizziness, fainting, stroke, or heart attack.
Before taking tadalafil, tell your doctor if you are taking any of the following medications:
any other drug used to treat impotence, such as sildenafil (Viagra), vardenafil (Levitra), alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others);
the antibiotic erythromycin (E-Mycin, Eryc, Ery-Tab, others);
an antifungal medication such as itraconazole (Sporanox) or ketoconazole (Nizoral);
HIV medications such as indinavir (Crixivan), ritonavir (Norvir), and others.
You may not be able to take tadalafil, or you may require a dosage adjustment or special monitoring during treatment if you are taking any of the medicines listed above.
Drugs other than those listed here may also interact with tadalafil or affect your condition. Talk to your doctor or pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.

Additional Information: DO NOT SHARE THIS MEDICINE with others. DO NOT USE THIS MEDICINE for other health conditions. KEEP THIS PRODUCT, as well as syringes and needles, if needed during treatment, out of the reach of children. Do not reuse needles, syringes, or other materials.