Viagra

Generic name: Sildenafil citrate.

Viagra is an impotence agent. It works by stimulating the release of cyclic guanosine monophosphate, a natural chemical regulator, producing a smooth muscle reaction that increases blood flow into the penis.

Quick Facts About Viagra

Purpose

Used to treat impotence in men.

Viagra Dosage

Take exactly as prescribed.

  • Usual adult dose: one 50-milligram tablet taken as needed 30 minutes to 4 hours before sexual activity. Not to exceed 1 dose per day. Doctor may modify dose to 25 to 100 milligrams.
  • Usual child dose: not generally prescribed for children.
  • Missed dose: take only as needed, unless otherwise instructed by your doctor.

Viagra Side Effects

Overdose symptoms:

more severe side effects. If you suspect an overdose, immediately seek medical attention.

More common side effects: diarrhea, dizziness, flushing, headache, rash, stuffy nose, upset stomach, urinary tract infection, vision changes including mild and temporary changes in color and increased sensitivity to light.

Less common Viagra side effects: back pain, flu-like symptoms, joint pain, respiratory tract infection. Rare side effects: abdominal pain, abnormal dreams, abnormal ejaculation, accidental injury or fall, allergic reaction, anemia, angina, arthritis, asthma, blood clot in brain, blood in stool, bone pain, breast enlargement, changes in blood levels of sodium, sugar, and uric acid, chest pain, colitis, difficulty swallowing, dizziness or fainting when rising from a sitting or lying position, decreased sensitivity to touch, depression, drowsiness, dry skin, dry mouth, ear pain, eye problems, frequent or uncontrolled urination, generalized pain, gingivitis, gout, heart problems including attack and palpitation, herpes simplex, incoordination, inflamed tongue, insomnia, itching, liver problems, low blood pressure, low white blood cell count, migraine, muscle pain, stiffness, or weakness, nerve pain, “pins and needles”, sensitivity to light, shock, skin ulcer, sweating, swelling, tendon rupture, thirst, tremor, unstable diabetes, vomiting, weakness.

Interactions

Inform your doctor before combining Viagra with:

antifungals such as ketoconazole (Nizoral) and itraconazole (Sporanox); cimetidine (Tagamet); erythromycin; medication containing organic nitrates such as nitroglycerin; mibefradil (Posicor); other impotence drugs such as Yocon; rifampin (Rifadin).

No known food/other substance interactions. 

Special Cautions

Not intended for pregnant women or infants.

No special precautions apply to seniors.

Not prescribed for children.

  • Doctor should perform a thorough medical history and physical examination to determine if Viagra is the right medication for you.
  • Should not use if you have a sustained erection due to sickle cell anemia, leukemia, or multiple melanoma; or if you have an abnormally shaped penis.
  • Inform your doctor before treatment if you have a history of: heart problems, bleeding disorders, or gastric ulcers; retinitis pigmentosa or other vision problems.

Note:

HealthSurvey.org provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Viagra side effects, please contact your healthcare provider