TADALAFIL - ORAL (Cialis) side effects, medical uses, and drug interactions.

TADALAFIL-ORAL Index

tadalafil - oral, Cialis (cont.)

PRECAUTIONS: Before taking tadalafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: penis conditions (e.g., angulation, fibrosis/scarring, Peyronie's disease), history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (e.g., leukemia or myeloma), eye problems (e.g., retina diseases like retinitis pigmentosa), kidney disease, liver disease, bleeding disorders, active stomach ulcers, heart problems (e.g., recent heart attack or serious arrhythmia within past 6 months, heart failure, coronary artery disease with unstable angina, aortic stenosis, idiopathic hypertrophic subaortic stenosis), recent stroke within past 6 months, very high or low blood pressure.This drug may make you dizzy or cause vision changes. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit alcoholic beverages.To minimize dizziness and lightheadedness, get up slowly when rising from a seated or lying position.This brand of the drug is not usually used in women. During pregnancy, tadalafil should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is unknown if this medication passes into breast milk. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.See also How To Use section for drug-food interactions.This drug should not be used with the following medications because very serious (possibly fatal) interactions may occur: nitrates (e.g., nitroglycerin, isosorbide), nitroprusside (or any "nitric oxide donor" drugs), recreational drugs called "poppers" containing amyl or butyl nitrite.If you are currently using any of these medications, tell your doctor or pharmacist before starting tadalafil.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: alpha-blocker medication (e.g., doxazosin, prazosin, terazosin), drugs that affect certain liver enzymes (CYP 3A4 substrates, inhibitors and inducers such as cimetidine, rifamycins, St. John's wort, or certain anti-seizure drugs), high blood pressure medicines, other medications for impotence.Do not take this medication with any other product that contains tadalafil or other similar medications used to treat erectile dysfunction/pulmonary hypertension (e.g., sildenafil, vardenafil).If you are also taking certain drugs (potent inhibitors of CYP3A4 such as fosamprenavir, amprenavir, ritonavir, nelfinavir, erythromycin, ketoconazole, itraconazole), you must place special limits on your use of tadalafil to reduce the risk of severe dizziness. If you are taking tadalafil as needed, do not take more than one 10-milligram dose of tadalafil in a 72-hour period. If you are taking tadalafil once a day, do not take more than 2.5 milligrams a day. Contact your doctor or pharmacist for more details.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.