- Are Levitra and Viagra the Same Thing?
- What Are Possible Side Effects of Levitra?
- What Are Possible Side Effects of Viagra?
- What is Levitra?
- What is Viagra?
- What Drugs Interact with Levitra?
- What Drugs Interact with Viagra?
- How Should Levitra Be Taken?
- How Should Viagra Be Taken?
Are Levitra and Viagra the Same Thing?
Levitra (vardenafil hydrochloride) and Viagra (sildenafil) are erectile dysfunction drugs that work by blocking a certain enzyme (phosphodiesterase-PDE5) used to treat erectile dysfunction (impotence).
What Are Possible Side Effects of Levitra?
Serious side effects include:
- headache,
- flushing (warmth or redness in your face, neck, or chest),
- runny or stuffy nose,
- stomach upset,
- heartburn,
- dizziness,
- back pain, or
- nausea.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What Are Possible Side Effects of Viagra?
Common side effects of Viagra include:
- warmth or redness in the face, neck, or chest,
- stuffy nose,
- headaches,
- stomach pain,
- upset stomach,
- nausea,
- diarrhea,
- memory problems,
- back pain,
- an inability to differentiate between the colors green and blue,
- loss of hearing,
- ringing in the ears,
- and dizziness.
What is Levitra?
Levitra is a prescription medicine taken by mouth for the treatment of erectile dysfunction (ED) in men.
ED is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. A man who has trouble getting or keeping an erection should see his doctor for help if the condition bothers him. Levitra may help a man with ED get and keep an erection when he is sexually excited.
What is Viagra?
Viagra is a prescription medicine used to treat erectile dysfunction (ED). You will not get an erection just by taking this medicine. Viagra helps a man with erectile dysfunction get and keep an erection only when he is sexually excited (stimulated).
Viagra is not for use in women or children.
It is not known if Viagra is safe and effective in women or children under 18 years of age.

QUESTION
Erectile dysfunction (ED) is… See AnswerWhat Drugs Interact With Levitra?
Levitra may interact with other medications for erectile dysfunction, conivaptan, imatinib, isoniazid, antidepressants, antibiotics, antifungals, drugs to treat high blood pressure or a prostate disorder, heart or blood pressure medications, or HIV/AIDS medicines.
What Drugs Interact With Viagra?
Viagra may interact with other medications for erectile dysfunction, conivaptan, imatinib, isoniazid, antidepressants, antibiotics, antifungals, drugs to treat high blood pressure or a prostate disorder, heart or blood pressure medications, or HIV/AIDS medicines.
How Should Levitra Be Taken?
Take Levitra exactly as your doctor prescribes. Do not take more than one Levitra a day. Doses should be taken at least 24 hours apart. Some men can only take a low dose of Levitra because of medical conditions or medicines they take. Your doctor will prescribe the dose that is right for you.
- If you are older than 65 or have liver problems, your doctor may start you on a lower dose of Levitra.
- If you have prostate problems or high blood pressure, for which you take medicines called alpha-blockers, your doctor may start you on a lower dose of Levitra.
- If you are taking certain other medicines your doctor may prescribe a lower starting dose and limit you to one dose of Levitra in a 72-hour (3 days) period.
- Take 1 Levitra tablet about 1 hour (60 minutes) before sexual activity. Some form of sexual stimulation is needed for an erection to happen with Levitra. Levitra may be taken with or without meals.
- Do not change your dose of Levitra without talking to your doctor. Your doctor may lower your dose or raise your dose, depending on how your body reacts to Levitra.
- Call your doctor or emergency room immediately if you accidentally took more Levitra than prescribed.
How Should Viagra Be Taken?
- Take Viagra exactly as your healthcare provider tells you to take it.
- Your healthcare provider will tell you how much Viagra to take and when to take it.
- Your healthcare provider may change your dose if needed.
- Take Viagra about 1 hour before sexual activity. You may take Viagra between 30 minutes to 4 hours before sexual activity if needed.
- Viagra can be taken with or without food. If you take Viagra after a high fat meal (such as a cheeseburger and french fries), Viagra may take a little longer to start working
- Do not take Viagra more than 1 time a day.
- If you accidentally take too much Viagra, call your doctor or go to the nearest hospital emergency room right away.

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FDA. Levitra Drug Information.
https://www.accessdata.fda.gov/drugsatfda_docs/label/2007/021400s010lbl.pdf
FDA. Viagra Drug Information.
https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/20895s039s042lbl.pdf