What is Viagra?

How should I take Viagra?

Take Viagra exactly as it was prescribed for you. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day.

Viagra can help you have an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor’s instructions.

During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of sildenafil.

Store at room temperature away from moisture and heat.

Before taking this medicine
You should not use Viagra if you are allergic to sildenafil, or:

• if you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas).
• if you take nitrates.

Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite (“poppers”). Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure.

To make sure Viagra is safe for you, tell your doctor if you have ever had:

• heart disease or heart rhythm problems, coronary artery disease;
• a heart attack, stroke, or congestive heart failure;
• high or low blood pressure;
• liver or kidney disease;
• a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia;
• a bleeding disorder such as hemophilia;
• a stomach ulcer;
• retinitis pigmentosa (an inherited condition of the eye);
• a physical deformity of the penis (such as Peyronie’s disease); or
• if you have been told you should not have sexual intercourse for health reasons.

Viagra | Sidenafil Citrate | Kamagra | Erection

What happens if I miss a dose?

Since Viagra is used as needed, you are not likely to miss a dose.

What happens if I overdose?

Seek emergency medical attention immediately

What to avoid

Drinking alcohol with this medicine can cause side effects.

Grapefruit and grapefruit juice may interact with sildenafil and lead to unwanted side effects. Avoid the use of grapefruit products while taking sildenafil.

Avoid using any other medicines to treat impotence, such as alprostadil or yohimbine, without first talking to your doctor

Viagra side effects

Get emergency medical help if you have signs of an allergic reaction to Viagra: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking Viagra and get emergency medical help if you have:

• heart attack symptoms–chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating;
• vision changes or sudden vision loss; or
• erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis).

Call your doctor at once if you have:

• ringing in your ears, or sudden hearing loss;
• irregular heartbeat;
• swelling in your hands, ankles, or feet;
• shortness of breath;
• seizure (convulsions); or
• a light-headed feeling, like you might pass out.

Common Viagra side effects may include:

• flushing (warmth, redness, or tingly feeling);
• headache, dizziness;
• abnormal vision (blurred vision, changes in color vision)
• runny or stuffy nose, nosebleeds;
• sleep problems (insomnia);
• muscle pain, back pain; or
• upset stomach.