Is Low-Dose Daily Cialis/Tadalafil Effective in Treating Erectile Dysfunction/ED?

Tadalafil does not protect against sexually transmitted infections, including HIV.

Dosing & Uses

Do not share tadalafil with other people, even if they have the same condition as you. Keep tadalafil out of the reach of children. Sexual activity can put extra strain on your heart, which may be unsafe for people with certain health problems, such as a recent heart attack. Talk to your healthcare provider to see if your heart is strong enough for sex. If you feel chest pain, dizziness, or nausea during sex, stop and contact your healthcare provider right away. Tadalafil belongs to a group of medicines, known as phosphodiesterase-5 (PDE-5) inhibitors, which are used to treat erectile dysfunction or pulmonary arterial hypertension.

• Not all men respond the same way to tadalafil.
• Some may experience priapism; seek urgent medical help if it occurs.
• Tadalafil may be combined with other PE treatments.
• Its use should be monitored by a healthcare professional.
• The medication’s efficacy for PE varies among individuals.
• Always disclose other medications to your doctor.

You should not take more than one PDE-5 inhibitor medicine.

Medicines in this group include avanafil (Stendra), sildenafil (Viagra, Revatio, and others), tadalafil (Cialis and others), and vardenafil (Levitra, Staxyn).

What Does ‘Low-Dose’ Mean?

If you notice any other effects, check with your healthcare professional. You may report side effects to the FDA at 1-800-FDA-1088. Tadalafil is a medicine that is commonly used for the following conditions. Erectile dysfunction, a condition where you have trouble getting or keeping an erection Pulmonary arterial hypertension, a condition where you have high blood pressure in the blood vessels that carry blood from your heart to your lungs Benign prostatic hyperplasia (BPH), a condition where the prostate gland has become enlarged Tadalafil may also be used for other conditions as determined by your healthcare provider. Tadalafil works by blocking the activity of an enzyme called phosphodiesterase 5 (PDE5).

Statistical analysis

This enzyme usually stops some types of muscles from relaxing, including the muscles lining some types of blood vessels. By blocking PDE5, the muscles will relax and blood flow increases. For erectile dysfunction, it increases blood flow to the penis when aroused. This makes it easier to get and keep an erection. For pulmonary arterial hypertension, tadalafil relaxes the blood vessels in the lungs. If you take liquid tadalafil, shake the bottle well for 30 seconds before use.

Use an accurate measuring device to measure your dose.

What other information should I know?

This condition may require prompt medical treatment to prevent serious and permanent damage to your penis. This medicine does not protect you against sexually transmitted diseases (including HIV or AIDS). Use protective measures and ask your doctor if you have any questions about this. It is important to tell your doctor about any heart problems you have now or may have had in the past. This medicine can cause serious side effects in patients with heart problems.

Dosing Modifications

Do not use this medicine if you are also using riociguat (Adempas®) or a nitrate medicine, often used to treat angina (chest pain). Some illegal ("street") drugs called "poppers" (such as amyl nitrate, butyl nitrate, or nitrite) also contain nitrates. If you need to use a nitrate medicine, take it at least 48 hours after your last dose of tadalafil. Do not drink excessive amounts of alcohol (eg, 5 or more glasses of wine or 5 or more shots of whiskey) when taking tadalafil. When taken in excess, alcohol can increase your chances of getting a headache or dizziness, increase your heart rate, or lower your blood pressure. A household spoon is not an accurate measuring device and may cause you to take the wrong dose.

Cialis: Beyond Erectile Dysfunction

Though rare, some people have reported permanent vision loss. Stop taking tadalafil and get help right away if you have sudden vision loss in one or both eyes. Tadalafil may cause a sudden decrease or loss of hearing. Stop taking tadalafil and tell your healthcare provider right away if you experience hearing loss or have any of the following symptoms. People who are allergic to any of the following should not take tadalafil.

Full Text Sources

Any of the ingredients in the specific product dispensed Your pharmacist can tell you all of the ingredients in the specific tadalafil products they stock. Tadalafil should not be taken while you are using certain other medicines. Before taking tadalafil, tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. See the Interactions section for more details. Do not take tadalafil unless it has been prescribed to you by a healthcare provider. Ask your pharmacist to recommend an appropriate measuring device.

• Using tadalafil alone may not be sufficient for PE.
• Combining tadalafil with behavioral therapy can be effective.
• Tadalafil’s effect duration can last up to 36 hours.
• It’s often taken 30 minutes prior to sexual activity.
• Tadalafil can cause side effects like headaches and flushing.
• Avoid alcohol while taking tadalafil to reduce side effects.

Tell your healthcare provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.

Additional information

This lowers tadalafil online blood pressure and reduces strain on the heart. For benign prostatic hyperplasia, tadalafil relaxes the muscles of the bladder and prostate, making it easier to urinate and reducing symptoms. Tadalafil should be stored at room temperature, between 68 F to 77 F (20 C to 25 C). It can be exposed to temperatures between 59 F to 86 F (15 C to 30 C) for shorter periods of time, such as when transporting it. The most common side effects of tadalafil are listed below.

Drug forms and administration

The side effects may vary depending upon the condition being treated. Tell your healthcare provider if you have any of these side effects that bother you. Pain in your muscles, back, arms, or legs There may be other side effects of tadalafil that are not listed here. Contact your healthcare provider if you think you are having a side effect of a medicine. In the U.S., you can report side effects to the FDA at or by calling 800-FDA-1088. This will help them determine if tadalafil is right for you. In particular, make sure that you discuss any of the following.

• Combining tadalafil with other PE medications should be supervised.
• It’s important to consider lifestyle factors alongside medication.
• Tadalafil can sometimes cause nasal congestion.
• Regular medical check-ups are advisable during use.
• The medication may improve overall sexual satisfaction.
• Not recommended for men with certain cardiovascular conditions.

Tell your healthcare provider if you have any of the following.

Dosage and Administration

If you experience sudden loss of vision in one or both eyes, contact your doctor immediately. 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. Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. Along with its needed effects, a medicine may cause some unwanted effects.

Overdose symptoms

Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur: faintness or lightheadedness when getting up suddenly from a lying or sitting position pain or discomfort in the arms, jaw, back, or neck Painful or prolonged erection of the penis blistering, peeling, or loosening of the skin fast, irregular, pounding, or racing heartbeat or pulse inability to move the arms, legs, or facial muscles numbness or tingling of the face, hands, or feet red skin lesions, often with a purple center sores, ulcers, or white spots in the mouth or on the lips swelling of the feet or lower legs Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings burning feeling in the chest or stomach feeling of constant movement of self or surroundings feeling of warmth, redness of the face, neck, arms and occasionally, upper chest redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid swelling or puffiness of the eyes or face Other side effects not listed may also occur in some patients. Heart problems, such as heart rhythm problems, chest pain, or heart failure Heart attack, stroke, or heart surgery within the past six months High blood pressure that is still too high despite taking medicines for it Peyronie's disease, or a penis with an abnormal curve or shape An erection lasting longer than four hours A blood disorder, such as sickle cell anemia, multiple myeloma, or leukemia An inherited eye disease called retinitis pigmentosa Vision loss, or a problem with the nerve between your eyes and brain (optic nerve) Health conditions or factors that raise the risk of optic nerve problems, such as diabetes, high cholesterol, smoking, being older than 50, or having a “crowded disc,” which is something an eye doctor may see in an eye exam Pulmonary veno-occlusive disease, a condition where blood vessels in the lungs are blocked It is not known if or how tadalafil could affect pregnancy or harm an unborn baby.

Frequently asked questions

In Canada, you can report side effects to Health Canada at or by calling 866-234-2345. While less common, the most serious side effects of tadalafil are described below, along with what to do if they happen. Tadalafil may cause allergic reactions, which can be serious. Stop taking tadalafil and get help right away if you have any of the following symptoms of a serious allergic reaction. Swelling of the face, lips, mouth, tongue, or throat Itching, skin rash, or pale red bumps on the skin called hives Tadalafil may cause an unwanted erection that is persistent, painful, and that may occur without sexual arousal.

Who should not use tadalafil?

Permanent damage to the penis may occur if priapism is not treated quickly. Stop taking tadalafil and get emergency help right away if you have any of the following symptoms of priapism. Erection lasting for more than 4 hours Erection that is unrelated to sexual stimulation If you feel faint or dizzy, tadalafil 2 5 mg lie down. Tell your healthcare provider right away if you have any of the following symptoms of low blood pressure. Tadalafil can cause mild, temporary vision changes such as seeing a blue tint, abnormal colors, blurry vision, or sensitivity to light. Tell your healthcare provider if you are or plan to become pregnant.