Levitra must be taken at least one hour prior to sexual activity with or without food. The drug should not be taken more than once a day.
Take only when required (prior to sexual activity). Do not take a double dose ever.
Some of the typical symptoms of an overdose include chest pain, back pain, dizziness and irregular heartbeat and abnormal vision. Seek medical attention immediately if you suspect an overdose.
Because sexual activity may place a strain on your heart, your doctor will need to check whether you are fit enough to use Vardenafil. Do not take Vardenafil if you are being treated for angina (chest pain) or other heart conditions with certain medicines called nitrates. Nitrate medicines include glyceryl trinitrate (also called nitroglycerine). These medicines can be sold under tradenames:
- Anginine tablets
- Glytrin Spray
- Minitran patches
- Nitrocor patches
- Nitro-Dur patches
- Nitroderm TTS patches
- Nitrolingual pump spray
- Rectogesic ointment
- Transiderm-Nitro patches
Other nitrate medicines include sodium nitroprusside, isosorbide mononitrate and isosorbide dinitrate. Isosorbide mononitrate tablets can be sold under tradenames:
- Imdur Durules
- Imtrate SR
- ISMO 20
Isosorbide dinitrate tablets can be sold under tradenames:
There may be other tradenames not listed here. Do not take Vardenafil if you are using the unapproved drug amyl nitrite (ie. poppers, amyl, rush), alpha-blockers (ie. Terazosin, Tamsulosin, and Prazosin) which are used to treat enlarged prostates or high blood pressure, and/or with other erectile dysfunction treatments. Levitra is not to be used if you have an allergy to vardenafil or other phosphodiesterase type 5 inhibitors, or any of the ingredients in Vardenafil tablets listed at the end of this leaflet. Some of the symptoms of an allergic reaction may include skin rash, itching, or difficulty breathing. Women, children, and growing adolescents should never use Levitra. Do not take your Levitra tablets after the expiry date printed on the pack and/or if the Levitra package is ripped or shows signs of tampering. The expiry date is marked on the strip of tablets as well as on the label of the carton. For example, 11 05 refers to the eleventh month of 2005.
Do not use Levitra if:
- you are allergic to any ingredient in Levitra;
- you are taking or using nitroglycerin (eg, tablet, patch, ointment), nitrates (eg, isosorbide), or certain antiarrhythmics (eg, amiodarone, quinidine);
- you have had a heart attack, stroke, or life-threatening irregular heartbeat within the past 6 months;
- you have certain eye problems (eg, retina diseases such as retinitis pigmentosa), uncontrolled chest pain, uncontrolled high blood pressure, low blood pressure, irregular heartbeat (eg, congenital QT prolongation), severe heart failure, severe liver problems, or end-stage kidney disease that requires dialysis.
Side effects that you should report to your prescriber or health care professional as soon as possible.
- back pain
- changes in hearing such as loss of hearing or ringing in ears
- changes in vision such as loss of vision, blurred vision, eyes being more sensitive to light, or trouble telling the difference between blue and green objects or objects having a blue color tinge to them
- chest pain or palpitations
- difficulty breathing, shortness of breath
- eyelid swelling
- muscle aches
- prolonged erection (lasting longer than 4 hours)
- skin rash, itching
Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):
- stuffy nose
This list may not describe all possible side effects.
Store Levitra at room temperature between 59 and 86 degrees F (15 and 30 degrees C) in a tightly-closed container, away from moisture.