Viagra Uses
Viagra used to treat erectile dysfunction (ED).

General Information
This database does not contain every known side effect, adverse effect, or drug interaction. If you have questions about your medicines, talk to your health care provider. This information is for educational purposes only.

How Drug Works
This medicine causes smooth muscle in the penis to relax, increasing blood flow to the penis.

How Taken
Take this medicine 1 hour before sexual activity. The manufacturer mentions an acceptable range of one half hour to four hours that the medicine can be taken before sexual activity. Follow the directions given to you by your doctor.

Possible Side Effects
upset stomach, diarrhea, changes in vision, headache, flushing. Talk to your doctor, if you experience prolonged abnormal, painful erections.

Warnings & Precautions
Do NOT take this medicine with nitrates. Do NOT take with isorbide (medicine used to relieve chest pains). If you have questions about which drugs are nitrates, talk to you pharmacist. Do NOT take this medicine more that once per day. Before taking any new medicine, either prescription or over-the-counter, talk to your doctor or pharmacist.

Overdose
For emergencies, seek medical attention immediately. For non emergencies, contact your local or regional poison control center at 1-800-222-1222.

Drug Interactions
NITRATES SHOULD NEVER BE COMBINED WITH THIS MEDICINE. Drugs that increase the effects of this medicine include; cimetidine, diltiazem, erythromycin, itraconazole (Sporanox), ketoconazole (Nizoral), metronidazole (Flagyl), sertraline (Zoloft). The following drugs may decrease the effects of sildenafil: carbamazepine (Tegretol), phenytoin (Dilantin), rifabutin and rifamptin For more information about these interactions talk to your doctor or pharmacist.

Missed Dose
Follow dosing instructions. This medicine is used when needed and not taken on a regular basis.

Storage
Store it at room temperature and away from excess heat and moisture (not in the bathroom). Keep this medication in the container it came in, tightly closed, and out of reach of children. Throw away any medication that is outdated or no longer needed.

Pregnancy/Nursing
No available information for this category.

More Information
For more information, talk to your doctor, pharmacist or health care provider.

Disclaimer
This drug information is for information purposes only, it is not intended that this information cover all uses, directions, drug interactions, precautions, or adverse effects of your medication. This is only general information and should not be relied on for any purpose; it should not be construed as containing specific instructions for any particular patient. Theonlinedrugstore.net disclaims all responsibility for the accuracy of, and reliability of this information and or any consequences arising from the use of this information, including damage or adverse consequences to persons or property, however such damages or consequences arise. No warranty, either expressed or implied is made in regards to the contents of this material.