Generic name: tadalafil [ ta-DAL-a-fil ]
Brand names: Adcirca, Alyq, Cialis, Tadalafil (Eqv-Adcirca), Tadalafil (Eqv-Cialis), Tadliq
Drug classes: Agents for pulmonary hypertension, Impotence agents

Medically reviewed by Drugs.com on Dec 11, 2023. Written by Cerner Multum.

What is Tadalafil (Eqv-Adcirca)?

Tadalafil (Eqv-Adcirca) is used in adult men to treat erectile dysfunction (impotence) and symptoms of benign prostatic hypertrophy (enlarged prostate).

Tadalafil (Eqv-Adcirca) can also be used in men and women to treat pulmonary arterial hypertension (PAH) and improve exercise capacity.

Do not take Tadalafil (Eqv-Adcirca) for erectile dysfunction and symptoms of enlarged prostate if you are taking Tadalafil (Eqv-Adcirca) for pulmonary arterial hypertension.

Tadalafil (Eqv-Adcirca) may also be used for purposes not listed in this medication guide.

Tadalafil (Eqv-Adcirca) side effects

Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Stop using Tadalafil (Eqv-Adcirca) and call your doctor at once if you have:

• severe vision problems, including sudden vision loss;

• a light-headed feeling, like you might pass out;

• ringing in your ears or sudden hearing loss;

• a painful erection or one that lasts longer than 4 hours; or

• heart attack symptoms--chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating.

Get emergency medical help if you have nausea, chest pain, dizziness during sex.

Common side effects of Tadalafil (Eqv-Adcirca) may include:

• headache;

• feeling light-headed;

• flushing (warmth, redness, or tingly feeling);

• nausea, upset stomach;

• runny or stuffy nose; or

• muscle pain, back pain, pain in your arms or legs.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Related/similar drugs

tamsulosin, finasteride, sildenafil, tadalafil, Flomax, prazosin, Cialis

Warnings

Some drugs can cause unwanted or dangerous effects when used with Tadalafil (Eqv-Adcirca). Tell your doctor about all your other medicines.

Stop using Tadalafil (Eqv-Adcirca) and get emergency medical help if you have sudden vision loss or hearing problems.

Get emergency medical help at once if you have nausea, chest pain, or dizziness during sex.

Before taking this medicine

You should not take Tadalafil (Eqv-Adcirca) if you are allergic to it, or if you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas).

Do not take Tadalafil (Eqv-Adcirca) if you are also using certain medicines for chest pain or heart problems called nitrates. These include nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate, butyl nitrate or nitrite ("poppers"). Taking Tadalafil (Eqv-Adcirca) with a nitrate can cause a sudden and serious decrease in blood pressure.

Some Tadalafil (Eqv-Adcirca) can remain in your bloodstream for 2 or more days after each dose you take (longer if you have liver or kidney disease). Avoid nitrate use during this time.

Tell your doctor if you have or have ever had:

• heart problems (chest pain, a heart rhythm disorder, congestive heart failure);

• a heart attack or stroke;

• pulmonary hypertension;

• bleeding problems;

• uncontrolled high or low blood pressure;

• retinitis pigmentosa (an inherited condition of the eye);

• problems with hearing or vision;

• a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia;

• pulmonary veno-occlusive disease (PVOD);

• a penis deformity (such as Peyronie's disease);

• priapism (an erection that is painful or lasts longer than 4 hours);

• a stomach ulcer;

• if you have been told you should not have sexual intercourse for health reasons;

• liver disease; or

• kidney disease (or if you are on dialysis).

It is not known if Tadalafil (Eqv-Adcirca) will harm an unborn baby. However, having pulmonary hypertension during pregnancy may cause complications or medical problems such as heart failure, and stroke in both mother and baby. Tell your doctor if you are pregnant or plan to become pregnant.

Ask a doctor if it is safe to breastfeed while using Tadalafil (Eqv-Adcirca) (Eqv-Adcirca).

Not approved for use by anyone younger than 18 years old.

How should I take Tadalafil (Eqv-Adcirca)?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Your dose needs may change if you switch to a different brand, strength, or form of this medicine. Avoid medication errors by using exactly as directed on the label, or as prescribed by your doctor.

When taking Tadalafil (Eqv-Adcirca) for erectile dysfunction, take it when needed, about 30 minutes before sexual activity. The medicine can help achieve an erection when sexual stimulation occurs. An erection will not occur just by taking a pill.

If you take Tadalafil (Eqv-Adcirca) once a day, take it at the same time each day, with or without food.

Swallow the tablet whole and do not crush, chew, or break it.

Shake the oral suspension (liquid) for 30 seconds before you measure a dose. Measure a dose with the supplied measuring device (not a kitchen spoon).

Do not use this medication more than once per day.

Do not change your Tadalafil (Eqv-Adcirca) dose or stop taking this medicine. Follow your doctor's dosing instructions very carefully.

If you receive medical care for heart problems, tell your caregivers when you last took Tadalafil (Eqv-Adcirca).

This medicine does not prevent the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV).

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking Tadalafil (Eqv-Adcirca)?

Avoid drinking alcohol. Alcohol can further lower your blood pressure and may increase your risk of headache, dizziness, or fainting.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.

Grapefruit may interact with Tadalafil (Eqv-Adcirca) and cause side effects. Avoid consuming grapefruit products.

What other drugs will affect Tadalafil (Eqv-Adcirca)?

Sometimes it is not safe to use certain medicines at the same time. Some drugs can affect your blood levels of other drugs you use, which may increase side effects or make the medicines less effective.

Tell your doctor about all your other medicines, especially:

• medicine to treat erectile dysfunction (impotence) or pulmonary arterial hypertension--riociguat, bosentan, avanafil, sildenafil, or vardenafil;

• medicine to treat chest pain--isosorbide mononitrate, isosorbide dinitrate, nitroglycerin;

• medicine to treat high blood pressure or enlarged prostate--alfuzosin, doxazosin, prazosin, terazosin, silodosin, tamsulosin;

• an antibiotic--clarithromycin, erythromycin, rifampin, or telithromycin;

• antifungal medicine--itraconazole, ketoconazole;

• HIV/AIDS medications--ritonavir and others;

• seizure medicine--carbamazepine, phenytoin, phenobarbital; or

• any other blood pressure medication.

This list is not complete and many other drugs may affect Tadalafil (Eqv-Adcirca). This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

Frequently asked questions

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Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer

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