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Common applications

This medicine is used to treat all sorts of erectile dysfunction and should be used by men with severe problems in that area. It achieves the effect by stimulating the blood flow into the penis, resulting in a more stable, sustained erection. The medicine has strong effects and is not to be used by women and children. Side effects may occur due to overdoses, refer to the manual for more information. The medication will not protect you against STDs, it is not meant to be used as a way of safe sex practicing. Precautions

Viagra must not be used in combination with a few specific chemicals. Those are nytroglycerin, as well as any nitrates in general. A sexual enhancer called "poppers" also falls into this category. If you're currently using one of these, refrain from using Viagra at all costs - the results could be severe. If you're not sure whether a medication contains nitrates, consult a doctor about it.

You may need to apply additional observation of your condition if you're taking certain medications, such as azole antifungals (e.g., itraconazole, ketoconazole), cimetidine, erythromycin, mibefradil, rifamycins (e.g., rifampin), high blood pressure medicines, or delavirdine. Some HIV protease inhibitors may pose additional restrictions. If you're taking an alpha-blocker medication, make sure you leave a gap of at least 48 hours inbetween the consumption of all the medicines.

Under no circumstances should you use this drug without consulting a doctor beforehand. You need to get your medical condition carefully evaluated, so inform your doctor of any specific conditions you can think of - dysfunctions in the penis, a history of strokes and other heart failure symptoms, liver and kidney diseases, blood pressure problems, as well as any allergies you might have.

How to use

Take the medicine between four and one hours before the sexual activity. Taking it one hour beforehand is usually the most effective. Don't increase the dosage on your own behalf, always consult a doctor before making such changes. If you're eating a lot of fatty foods, this may delay the effects of the medication.

Grapefruit can have negative interactions with the medicine, so refrain from eating it (as well as any products containing it) while you're using the medicine. The dosage you're applying should be dependent on your medical condition, as well as your body's response to therapy. If you're using any other similar medications, your body's reaction to them can also prove helpful.

The medicine should be stored in a cool, dry place at about room temperature - around 25 degrees C, or 77 F. Keep it away from any sources of heat, moisture, and direct exposure to sunlight.

Warnings

Do not use the medication if you've got a history of allergic reactions to one of its ingredients. In some rare cases, it may cause dizziness and vision changes. It can interfere with your ability to drive and make reasonable decisions, so make sure you don't drive or operate dangerous machinery while using it for the first time. To avoid dizziness, sit up and down in a slow, careful fashion and avoid sudden movements. If you're consuming the drug alongside alcohol, make sure you drink in reasonable amounts, as increased alcohol consumption can have adverse effects when combined with the medicine.

Always consult your doctor if you're about to make changes to the dosage. Your heart rhythm may be changed while under the effects of the medicine, and this can rarely be fatal - mostly in cases where the patient has had a previous history of heart-related problems. Combining the drug with other similar drugs can enhance this effect, so consult your doctor about which drugs to stop if you want to put a halt to the effect as well.

Elderly patients should take especially great caution, as they're more sensitive to the effects of the medication. Women and children should not use the medicine at all, as it is not designed for use by them and can cause unpredictable results.

Side effects

Possible side effects related to the use of this medicine include headache, upset stomach, diarrhea, dizziness and lightheadedness. You may experience vision changes during sudden changes in the light conditions, as well as other vision-related problems such as colour distinguishing inability, and blurred vision.

Sex can have severe effects on your heart, including an increased heart rate, chest pain, fainting, and others. If you have a history of previous heart problems, this can further worsen the condition and put you at risk. As soon as you start experiencing such effects, stop the sexual activities immediately and consult a doctor about your problems. If you achieve an unusually prolonged erection - for example, for over 4 hours - stop using the medication immediately, or you risk exposing your penis to permanent complications.

It's not very likely that the medication can cause an allergic reaction, but if this does occur, look for medical attention immediately. Symptoms to look for are swelling, rashes, redness, and discomfort.

Overdose

An overdose of the product can cause a headache, dizziness, fainting, as well as other unpleasant symptoms. In case of an overdose, seek emergency medical attention.

Final notes

If your symptoms do not improve but instead deteriorate, consult your doctor about possible alternative courses of action. Do not provide the medicine to others who don't have a prescription for it, as you risk exposing them to unforeseen problems and complications.

Do not attempt to treat other conditions with the medicine. Keep it well out of reach for children, pets, and anyone else who should not have access to it. Plan beforehand and supply yourself accordingly so that you don't have to pause your treatment.

Interaction with other drugs

There could be some unpredicted interactions with other drugs which you're taking currently. Should those occur, talk to a doctor and he'll help you figure out which drugs you should continue using, and which you should give a halt to.