Know the basics
What is tadalafil used for?
Tadalafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, tadalafil works by increasing blood flow to the penis to help a man get and keep an erection.
Tadalafil is also used to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). It helps to relieve symptoms of BPH such as difficulty in beginning the flow of urine, weak stream, and the need to urinate frequently or urgently (including during the middle of the night). Tadalafil is thought to work by relaxing the smooth muscle in the prostate and bladder.
This drug does not protect against sexually transmitted diseases (such as HIV, hepatitis B, gonorrhea, syphilis). Practice “safe sex” such as using latex condoms. Consult your doctor or pharmacist for more details.
OTHER USES: This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
Tadalafil is also available in another brand for treating high blood pressure in the lungs (pulmonary hypertension).
How should I take tadalafil?
Read the Patient Information Leaflet provided by your pharmacist before you start taking tadalafil and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication by mouth, with or without food, as directed by your doctor. Do not take tadalafil more often than once daily.
The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, non-prescription drugs, and herbal products).
To treat the symptoms of BPH, take this medication as directed by your doctor, usually once a day. If you are also taking finasteride with this medication to treat symptoms of BPH, talk with your doctor about how long you should continue taking this medication.
To treat erectile dysfunction-ED, there are 2 ways that tadalafil may be prescribed. Your doctor will determine which is the best way for you to take tadalafil. Follow your doctor’s directions exactly since your dosage depends on how you are taking it. The first way is to take it as needed, usually at least 30 minutes before sexual activity. Tadalafil’s effect on sexual ability may last up to 36 hours.
The second way to treat ED is to take tadalafil regularly, once a day every day. If you take it this way, you may attempt sexual activity at any time between your doses.
If you are taking tadalafil to treat both ED and BPH, take it as directed by your doctor, usually once a day. You may attempt sexual activity at any time between your doses.
If you are taking tadalafil once daily for BPH, or for ED, or for both, take it regularly to get the most benefit from it. To help you remember, take it at the same time each day.
Tell your doctor if your condition does not improve or if it worsens.
How do I store tadalafil?
Tadalafil is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store tadalafil in the bathroom or the freezer. There may be different brands of tadalafil that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush tadalafil down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Know the precautions & warnings
What should I know before using tadalafil?
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Use of Cialis® tablet is not indicated for use in the pediatric population. Safety and efficacy have not been established.
Appropriate studies have not been performed on the relationship of age to the effects of Adcirca™ tablet in the pediatric population. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of tadalafil in the elderly. However, elderly patients are more likely to have age-related kidney problems, which may require caution and an adjustment in the dose for patients receiving tadalafil.
Is it safe to take tadalafil during pregnancy or breast-feeding?
There isn’t enough information about the safety of using this medication during pregnancy and breast-feeding. Please always consult with your doctor to weigh the potential benefits and risks before taking this medication.
Know the side effects
What are the side effects of tadalafil?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
If you become dizzy or nauseated during sexual activity, or if you have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of tadalafil.
Stop using tadalafil and call your doctor at once if you have any of these serious side effects:
- changes in vision or sudden vision loss;
- ringing in your ears, or sudden hearing loss;
- chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
- irregular heartbeat;
- shortness of breath, swelling in your hands or feet;
- seizure (convulsions);
- feeling light-headed, fainting; or
- penis erection that is painful or lasts 4 hours or longer.
Less serious side effects may include:
- redness or warmth in your face, neck, or chest;
- cold symptoms such as stuffy nose, sneezing, or sore throat;
- memory problems;
- diarrhea, upset stomach; or
- muscle pain, back pain.
Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.
Know the interactions
What drugs may interact with tadalafil?
Tadalafil may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
- Amyl Nitrite
- Erythrityl Tetranitrate
- Isosorbide Dinitrate
- Isosorbide Mononitrate
- Pentaerythritol Tetranitrate
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Does food or alcohol interact with tadalafil?
Tadalafil may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug, especially grape fruit juice and ethanol.
What health conditions may interact with tadalafil?
Tadalafil may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have, especially:
- Abnormal penis, including curved penis and birth defects of the penis—Chance of problems occurring may be increased and this medicine should be used with caution in these patients.
- Age greater than 50 years or
- Coronary artery disease or
- Diabetes or
- Hyperlipidemia (high lipids or fats in the blood) or
- Hypertension (high blood pressure) or
- Low cup to disc ratio (eye condition also called “crowded disc”) or
- Smoking—These conditions may increase risk for a serious eye problem called non-arteritic ischemic optic neuropathy or NAION.
- Angina (reoccurring chest pain) or
- Arrhythmia (irregular heartbeat), uncontrolled or
- Heart attack (within the last 3 months) or
- Heart failure (within the last 6 months) or
- Hypertension (high blood pressure) or
- Hypotension (low blood pressure), uncontrolled or
- Retinal disorders (eye problem) or
- Retinitis pigmentosa (an inherited eye disorder) or
- Stroke, recent history of—Should not be used in patients with these conditions.
- Bleeding disorders or
- Stomach ulcers—Chance of problems occurring may be increased; it is not known if the medicine is safe for use in these patients.
- Bone marrow cancer or
- Leukemia (blood related cancer) or
- Multiple myeloma (blood related cancer) or
- Sickle-cell anemia (blood disorder)—Tadalafil should be used with caution in these patients as problems with prolonged erection of the penis may occur.
- Heart blood flow problems—These conditions may cause you to be more sensitive to tadalafil.
- Heart disease, underlying—Chance of low blood pressure occurring is greater; tadalafil should be used carefully in these patients.
- Kidney disease, severe or
- Liver disease—Use with caution. May increase risk of having unwanted effects. Lower starting doses may be used and doses increased as needed and as tolerated.
- NAION (serious eye condition) in one or both eyes, may increase your chance of getting NAION again.
Understand the dosage
The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this medication.
What is the dose of tadalafil for an adult?
Usual Adult Dose for Erectile Dysfunction:
10 mg orally taken prior to anticipated sexual activity. The maximum recommended dosing frequency is once per day in most patients.
Alternatively, 2.5 mg orally once daily, without regard to timing of sexual activity. May increase to 5 mg orally once daily based on efficacy and tolerability.
Erectile dysfunction and benign prostatic hyperplasia together:
5 mg orally taken at approximately the same time every day.
Usual Adult Dose for Pulmonary Hypertension:
40 mg orally once daily, with or without food. Dividing the dose (40 mg) over the course of the day is not recommended.
Usual Adult Dose for Benign Prostatic Hyperplasia:
Benign prostatic hyperplasia and benign prostatic hyperplasia with erectile dysfunction:
5 mg orally taken at approximately the same time every day.
What is the dose of tadalafil for a child?
The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.
How is tadalafil available?
Tadalafil is available in the following dosage forms and strengths:
Tablet 2,5 mg; 5 mg; 10 mg; 20 mg;
What should I do in case of an emergency or overdose?
In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.
What should I do if I miss a dose?
If you miss a dose of tadalafil, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Tadalafil. https://medlineplus.gov/druginfo/meds/a604008.html. Accessed July 15, 2016.
Tadalafil. https://www.drugs.com/tadalafil.html. Accessed July 15, 2016.
Tadalafil for erectile dysfunction. http://patient.info/medicine/tadalafil-for-erectile-dysfunction-cialis. Accessed July 15, 2016.
Review Date: May 30, 2016 | Last Modified: January 4, 2017