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Side Effects of Viagra

There are some side-effects associated with the drug. However, most of these side-effects are minor and temporary in nature. Only few of them are serious and need medical attention. Some of the common side-effects of the drug are:

  • Dizziness, headache
  • Indigestion
  • Flushing
  • Diarrhea
  • Nasal congestion
  • Rash

Patients are advised to rush to hospital immediately in case if they experience any of the following serious side-effects:

  • Allergy signs like wheezing or difficulty in breathing, swelling in face, tongue or lips
  • Sudden decrease or loss of hearing
  • Chest pain
  • Seizures
  • Erection persist for longer than unusual
  • Unusual heart beat
  • Urinary tract infection
  • Blood in the urine
  • Persistent headache or fainting

Sildenafil Drug Interactions

There are certain drugs which may interact with Sildenafil and affect its normal working. Thus, it is important for the patients to consult the doctor if they are taking any over-the-counter medications, herbal or other vitamin supplements. Some of the drugs that may interact with Viagra are listed below:

  • Cimetidine
  • Bosentan
  • Nefazodone
  • St. John’s wort
  • Imatinib
  • Antibiotics like erythromycin, clarithromycin
  • Antifungal medication
  • Blood pressure medication
  • Hepatitis C medication
  • HIV/AIDS medication
  • Seizure medication
  • Tuberculosis medication
  • Nitrates and anti-angina medications

Important Warnings and Precautions of Sildenafil

Sildenafil is not recommended in all patient and in some cases patients are advised to consult the doctor prior taking this drug. Thus, patients must be aware of certain warnings and precautions related with this drug so that they administer this drug without posing any further health complications.

Patients suffering from any of the following medical conditions must inform doctor prior taking Sildenafil:

  • Diabetes
  • Kidney or liver problem
  • Leukemia
  • Multiple Myeloma
  • Any bleeding or disorder like hemophilia
  • Any disease or deformity of penis
  • Disease of blood called sickle cell anemia
  • Stomach ulcer
  • Color vision problems
  • Sudden decrease or loss of hearing
  • If you are taking any other medicine for impotence.

Usage of Viagra is strictly prohibited in case:

  • Patients are taking nitrate medicines for angina
  • They are allergic to any of its active or inactive ingredients
  • They are pregnant, planning for the same or breast-feeding
  • They have severe liver problems
  • Suffered stroke or heart attack in the last six months
  • They are below 18 years of age