Precautions
Drug information provided by: Merative, Micromedex®
It is very important that your doctor check your progress closely while you are receiving this medicine to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Using this medicine while you are pregnant can cause very serious birth defects. Use a highly effective birth control or 2 forms of effective birth control to keep from getting pregnant before starting, during treatment (even if the medicine is temporarily stopped), and for at least 1 month after your last dose. The most effective forms of birth control are hormone birth control pills, patches, shots, vaginal rings, or implants, or a vasectomy (for males). One of these forms of birth control should be combined with a condom, a diaphragm, or a cervical cap. If a partner’s vasectomy is the chosen method of contraception, a hormone or barrier method must be used along with this method. If you think you have become pregnant while using this medicine, tell your doctor right away.
If you can get pregnant, you must have a negative pregnancy test before you can take this medicine. You will also be required to have a pregnancy test every month during treatment and for 1 month after treatment with this medicine. If you miss a period while you are using this medicine, tell your doctor right away.
Do not take other medicines that contains tadalafil (Cialis®) or other PDE5 inhibitors, including sildenafil (Revatio® or Viagra®) or vardenafil (Levitra®). If you take too much tadalafil or take it together with these medicines, the chance for side effects will be higher.
Do not use this medicine if you are also using riociguat or a nitrate medicine, often used to treat angina (chest pain). Nitrate medicines include nitroglycerin, isosorbide, Imdur®, Nitro-Bid®, Nitrostat®, Nitro-Dur®, Transderm Nitro®, Nitrol® Ointment, and Nitrolingual® Spray. Some street drugs called "poppers" (eg, 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 have 4 or more alcohol-containing drinks in a short period of time while you are taking tadalafil. Alcohol can increase your chances of getting a headache or dizziness, increase your heart rate, or lower your blood pressure.
This medicine may decrease sperm count in some males and may cause infertility (unable to have children). Talk with your doctor before using this medicine if you plan to have children.
This medicine may cause serious liver problems. Check with your doctor right away if you have dark urine, fatigue, loss of appetite, nausea or vomiting, severe stomach pain, or yellow eyes or skin.
Dizziness, lightheadedness, or fainting may occur, especially when you get up suddenly from a lying or sitting position. Getting up slowly may help. If this problem continues or gets worse, check with your doctor right away.
Check with your doctor right away if you have pale skin, trouble breathing, unusual bleeding or bruising, or unusual tiredness or weakness. These may be symptoms of anemia.
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.
This medicine may cause fluid retention (too much water in the body) and peripheral edema (swelling). Check with your doctor right away if you have bloating or swelling of the face, arms, hands, lower legs, or feet, decrease in amount of urine, noisy, rattling, or trouble breathing, rapid weight gain, swelling of the face, hands, feet, or lower legs, tingling of the hands or feet, or weight gain.
If you experience a prolonged erection for more than 4 hours or a painful erection, contact your doctor immediately. This condition may require prompt medical treatment to prevent serious and permanent damage to your penis.
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.
Portions of this document last updated: June 01, 2024
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