Erectile Dysfunction

What is Viagra?

white-tablets-painkillers-with-pharmacy-medical-background-white-pills-alleviating-illness-fever-3d-rendering

What is Viagra?

  • Viagra (sildenafil) is a prescription medication used to treat erectile dysfunction in men.
 
How does it work?
  • It works by dilating the blood vessels that carry blood to the penis. When the penis is sexually stimulated, the dilated blood vessels can more easily initiate and maintain an erection.
How is it supplied?
  • You can buy Viagra online in the following forms and strengths:
    • Viagra
      • 25mg Tablet
      • 50mg Tablet
      • 100mg Tablet
    • Generic Viagra (sildenafil)
      • 25mg Tablet
      • 50mg Tablet
      • 100mg Tablet
How should I store it?
  • Store your Viagra at room temperature and keep it out of reach of children.
Directions

Should I take Viagra with food?

  • You can take Viagra without regard to meals.

Are there any special instructions?

  • Take your Viagra 30 minutes to one hour before sexual activity. Some patients find that taking Viagra up to four hours before sexual activity works well for them.

What is the usual dose?

  • Usual starting dose – Take 50mg by mouth one hour before sexual activity.
    • Your doctor could increase or decrease your dose, depending on your results.
    • Do not take more than one dose per day.
Ingredients

What is the active ingredient in Viagra?

  • Sildenafil citrate

What are the inactive ingredients?

  • For a complete list of inactive ingredients, click here.
Cautions

Who should avoid taking Viagra?

  • Do not use Viagra if you have a known allergy to any of the ingredients.
  • Talk to your doctor before using Viagra to make sure your heart is healthy enough to use Viagra.

What are the risks?

  • Viagra can be dangerous for patients with cardiovascular conditions. Discuss your risk with your doctor if you have any of the following:
    • High or low blood pressure
    • History of heart attack, stroke, or life-threatening arrhythmia within the last six months
    • Pulmonary hypertension secondary to sickle cell anemia
    • Pulmonary veno-occlusive disease
  • Talk to your doctor if you have liver or kidney problems. They could adjust your dose as appropriate.
  • Viagra can cause a sudden loss of vision or hearing.
  • Viagra can cause persistent and painful erections. You could be at an increased risk if you have any of the following:
    • Anatomical deformation of the penis (angulation, curvature, cavernosal fibrosis, or Peyronie disease)
    • Sickle cell anemia
    • Multiple myeloma
    • Leukemia
  • If you experience an erection that lasts more than four hours, contact your doctor immediately.
Drug Interactions

Viagra is contraindicated if you use any of the following medications

 

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  • Organic nitrates
  • Ritonavir
  • Saquinavir
  • Indinavir
  • Nitroprusside
  • Boceprevir
  • Fosamprenavir
  • Telaprevir
  • Amprenavir
  • Phosphodiesterase inhibitors
  • Atazanavir
  • Amyl nitrate
  • Nelfinavir
  • Cobicistat
  • Lopinavir
  • Darunavir
  • Tipranavir
  • Molsidomin

Talk to your doctor before taking Viagra if you use any of the following medications.

  • Telithromycin
  • Dihydrocodeine
  • Nefazodone
  • Voriconazole
  • Itraconazole
  • Conivaptan
  • Cannabis
  • Duvelisib
  • Lorlatinib
  • Larotrectinib
  • Fluconazole
  • Simeprevir
  • Netupitant
  • Ceritinib
  • Clarithromycin
  • Lumacaftor
  • Ivosidenib
  • Idelalisib
  • Silodosin
  • Bosentan
  • Etravirine
  • Nebivolol
  • Ketoconazole
  • Ciprofloxacin
  • Alpha-1 adrenergic blockers
  • Rifapentine
  • Erythromycin
  • Delavirdine
  • Crizotinib
  • Ranolazine
  • Apalutamide
  • Paclitaxel
  • Furosemide
  • Cimetidine
Side Effects

What are the common side effects of Viagra?

  • Erythema
  • Flushing
  • Pulmonary arterial hypertension
  • Indigestion
  • Headache
  • Insomnia
  • Visual disturbance
  • Nosebleeds
  • Nasal congestion
  • Rhinitis

What are the serious side effects?

  • Cardiovascular morbidity
  • Myocardial infarction
  • Sickle cell anemia
  • Non-arteritic ischemic optic neuropathy
  • Retinal hemorrhage
  • Decreased hearing
  • Sudden hearing loss
  • Priapism

Other Considerations

  • Buying Viagra online can be a safe and private way to get your medication.
References:
  1. DailyMed – VIAGRA- sildenafil citrate TABLET, film coated. (2019). Retrieved April 21, 2020
  2. Sildenafil. (n.d.). Retrieved April 21, 2020

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