Viagra instructions

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Active ingredient: SILDENAFIL

Brand Name: Viagra

The following product information is not intended to replace the physician's or manufacturer's instructions.

VIAGRA USES:
Viagra is used to treat male sexual function problems (erection problems). Viagra relaxes muscles within the penis. This allows increased blood flow into the penis, necessary to achieve and maintain an erection.

HOW TO USE VIAGRA:
Viagra is taken by mouth as needed between four hours and one-half hour before sexual activity (about one hour before is most effective). Take only as directed, usually once daily as needed. Viagra works along with sexual stimulation to help achieve an erection. Do not take double or extra doses.

VIAGRA SIDE EFFECTS:
Viagra helps most people with erectile dysfunction, but it may have unwanted side effects in a few people.
Tell your doctor or pharmacist if any of the following side effects are troublesome, severe, or do not go away:

• diarrhea
• dizziness
• flushing
• headache
• indigestion
• nasal congestion

If you experience any of the following serious symptoms, contact your doctor immediately:

• changes in vision such as 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
• difficulty breathing, shortness of breath
• chest pain or palpitations
• prolonged erection (lasting longer than 4 hours)
• skin rash, itching

Tell your doctor or pharmacist if you notice anything that is making you feel unwell.

VIAGRA PRECAUTIONS:
Before using Viagra, tell your doctor your medical history, including any allergies (especially drug allergies), any penis conditions such as fibrosis/scarring, history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (such as leukemia or myeloma), or Peyronie's disease, eye problems (retina diseases), kidney or liver disease, bleeding disorders or active stomach ulcers, frequent heartburn or gastroesophageal reflux disease (GERD), heart diseases, stroke or severe high or low blood pressure. Do not take any other drug used to treat impotence, such as alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin), without first talking to your doctor. Grapefruit and grapefruit juice may interact with Viagra. The interaction could lead to potentially adverse effects. You should discuss the use of grapefruit and grapefruit juice with your doctor. Limit alcohol intake, as it may aggravate side effects of this drug. To avoid dizziness and lightheadedness when rising from a seated or lying position, get up slowly. The elderly may be more sensitive to the side effects of Viagra, therefore caution is advised in this group. Contact you doctor immediately if the erection lasts longer than 4 hours or if it becomes painful. This may be a sign of priapism and must be treated immediately to prevent permanent damage. If you notice any changes in your vision while taking this drug, notify your doctor as soon as possible. Do not change the dose of your medication. Using Viagra does not protect you or your partner against sexually transmitted diseases.

DRUG INTERACTIONS:
Many drugs can interact with Viagra, resulting in side effects or decreased effectiveness of the medicine Tell your doctor of all nonprescription and prescription medication you may use. Do not take Viagra if you are taking the following medications: nitroglycerin-type drugs for the heart or chest pain such as amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin.
Viagra may also interact with the following medications:

• bosentan
• certain drugs used for seizures such as carbamazepine, phenytoin, and phenobarbital
• certain medications used for fungal or yeast infections (e.g. fluconazole, ketoconazole, voriconazole)
• medications for treating benign prostatic hypertrophy (BPH)
• cimetidine
• cisapride
• clarithromycin
• diltiazem
• erythromycin
• grapefruit juice
• mibefradil
• nitroprusside
• rifabutin
• rifampin
• some medicines for treating depression, anxiety or other mood problems (e.g. fluoxetine, fluvoxamine, nefazodone).

NOTES:
Do not share Viagra with others, since they may have a problem that is not effectively treated by this drug. Use of this drug does not protect against sexually transmitted diseases.

MISSED DOSE:
Not applicable.

OVERDOSE:
If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include severe dizziness, fainting, or prolonged erection.

STORAGE:
Store at room temperature between 59 and 86 degrees F (15-30 degrees C) away from light and moisture. Keep this and all medications out of the reach of children.

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