For most men with ED (erectile dysfunction), CIALIS can improve the ability to get and keep an erection when sexually stimulated — no matter how severe the ED symptoms are. CIALIS is the only ED tablet clinically proven to both work fast, in as little as 30 minutes in some men, and work for up to 36 hours.* CIALIS lets you and your partner choose when the moment is right. Only your doctor can diagnose ED and determine if CIALIS is right for you.

Take one CIALIS tablet before sexual activity. Because there are no food restrictions with CIALIS, you can take CIALIS without having to plan around meals. CIALIS should not be taken more than once a day.

CIALIS comes in three different doses — 20 mg, 10 mg, and 5 mg. You and your doctor will determine the dose that works best for you. Always take CIALIS exactly as prescribed by your doctor.

No. CIALIS works only with sexual stimulation. You won't get an erection just by taking CIALIS. CIALIS works to help you get an erection when you are sexually aroused and keep the erection until the completion of sexual activity.

No. CIALIS works only with sexual stimulation. CIALIS makes it possible for erections to occur. When sexual activity is over, your erection will go away. The benefit of 36 hours is that you and your partner can relax and take your time. As with any ED tablet, in the rare event of priapism (an erection lasting more than four hours), seek immediate medical help to avoid long-term injury.

No. CIALIS can be taken with or without food. That means you and your partner are free to enjoy a meal as part of your intimate time together. However, you should not drink alcohol in excess (to the level of intoxication) when taking CIALIS. Too much alcohol, in combination with CIALIS, can increase your chances of getting a headache or getting dizzy, increasing your heart rate, or lowering your blood pressure.

Whether you have sex or not, CIALIS should not be taken more than once a day, meaning once in a 24-hour period. For example, if you take CIALIS at 8:00 PM on Saturday night, you should not take it again until after 8:00 PM on Sunday night.

Some of the most common side effects with CIALIS are headache, upset stomach, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Patients who get back pain and muscle aches usually get it 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away by themselves within 48 hours. Call your doctor if you get a side effect that bothers you or one that does not go away. As with any ED tablet, in the rare event of priapism (an erection that lasts more than four hours), seek immediate medical help to avoid long-term injury. CIALIS may uncommonly cause vision changes, such as seeing a blue tinge to objects or having difficulty telling the difference between the colors blue and green. In rare instances, men taking prescription ED tablets (including CIALIS) reported a sudden decrease or loss of vision. It is not possible to determine if these events are related directly to the ED tablets or to other factors. If you have a sudden decrease or loss of vision, stop taking any ED tablet (including CIALIS) and call your doctor right away. Sudden loss or decrease in hearing, sometimes with ringing in the ears and dizziness, has been reported in rare instances in men taking prescription ED tablets, including CIALIS. It is not possible to determine whether these events are related directly to the PDE5 inhibitors, to other diseases or medications, to other factors, or to a combination of factors. If you experience these symptoms, stop taking CIALIS and contact a doctor right away. These are not all the possible side effects of CIALIS. For more information, ask your doctor or pharmacist.

Learn more » Important Safety Information about CIALIS

CIALIS is the only ED tablet clinically proven to both work fast, in as little as 30 minutes in some men, and work for up to 36 hours.* And with CIALIS, you don't need to plan around meals or avoid high-fat foods because the absorption of CIALIS is not affected by food.

The safety and efficacy of combinations of CIALIS and other treatments for ED have not been studied. Therefore, the use of such combinations is not recommended.

Only your doctor can determine if CIALIS is right for you. You should NOT take CIALIS if you:

• Take any medicines called nitrates. Medicines called nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm. Nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbidedinitrate or isosorbide mononitrate. Some recreational drugs called "poppers" also contain nitrates, such as amyl nitrite and butyl nitrite. Do not use CIALIS if you are using these drugs. Ask your doctor or pharmacist if you are not sure if any of your medicines are nitrates
• Have been told by your healthcare provider to not have sexual activity because of health problems. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease
• Are allergic to CIALIS or any of its ingredients. The active ingredient in CIALIS is called tadalafil

Do not take CIALIS unless your doctor has prescribed it for you.

When a man has ED (erectile dysfunction), he may not be able to get an erection that's hard enough for sexual intercourse. Or, he may have difficulty keeping an erection until the end of sexual intercourse. ED can range from frequently not being able to get or keep an erection to never being able to achieve one or keep one. More than 50% of men between the ages of 40 and 70 years experience ED to some degree. The good news is that for most men, ED is treatable.

More than 30 million men living in the United States are affected by some degree of ED. Nearly 70% of these cases of ED have physical causes. These causes can include health conditions, injury, and medicine side effects. Men who are more likely to develop ED include those with:

• Diabetes
• High blood pressure
• High blood cholesterol
• Heart or blood vessel disease
• Injuries or surgery to the pelvic area, especially prostate and rectal surgery

ED can also be caused by side effects from the medicines that men take to treat these health problems.

Also at risk for ED are men who:

• Smoke
• Drink too much alcohol
• Use recreational drugs, such as marijuana, cocaine, or heroin

Sometimes, ED may be caused by psychological factors such as stress or anxiety. In many cases, ED may result from a combination of physical and psychological factors. The important thing to remember is that ED is treatable in most men regardless of its cause.

Oral prescription medicines (tablets), such as CIALIS, are the most common medical treatment for ED. These medicines are convenient to use. They help increase blood flow in the penis when a man is sexually stimulated. The medicines help a man with ED get and keep an erection that is firm enough for sexual activity. Once sexual activity is completed, blood flow to his penis decreases, and his erection goes away.

Sex can be a sensitive subject to talk about. But having a conversation with your doctor about ED is important because:

• ED may be an early warning sign of a more serious health condition, such as diabetes, heart disease, or high blood pressure. Seeking treatment for ED can be the first step in taking care of your sexual health and your overall health
• ED may be taking an emotional toll on you, your partner, and your relationship

If you feel a bit uneasy talking with your doctor about ED, it may help you to keep a few things in mind. Chances are your doctor has heard concerns like yours before. He or she has had similar discussions with other men over the years. Your doctor knows that ED is a medical condition and that it can be a warning sign of other health problems. You can always discuss ED with your doctor as part of your routine physical exam. At your next appointment, your doctor will probably ask you about your general health and if anything different or new is bothering you. This is a good opportunity to bring up your concerns about possibly having ED. Not sure what to say next? You could say:

• "My love life isn't what it used to be."
• "This isn't easy to talk about, but I'm having erection problems. If it's ED, I want to find out about CIALIS."
• "I saw a commercial for CIALIS on TV, and I've been hearing a lot about ED lately. I think I might have ED, and I want to do something about it."
• "Could my high blood pressure (or diabetes, high cholesterol, depression) or the medicines I take for it cause me to have ED?"
• "I read that ED can be a warning sign of some serious medical problems. So I'm here to talk about it, but I'm a little uncomfortable."