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Sildenafil is an oral phosphodiesterase inhibitor that is used to treat erectile dysfunction.
Patients can buy Sildenafil with an included prescription consultation with a doctor.
For Use By
Delivery Method

Can I Buy Sildenafil?

Approved patients can buy Sildenafil with the included prescription consultation. After consulting with the doctor via an online Telewellness visit and being approved, the pharmacy will send the medication directly to your door.

Do we offer Sildenafil as part of a treatment plan?
Erections last up to 4 hours with most men
Takes 30 to 60 minutes
Take as needed. Use caution if more than once a day.

How Does Sildenafil Work?

Increases Blood Flow into the Penis

Sildenafil prevents the breakdown of cycle guanosine monophosphate (cGMP) by inhibiting the activity of specific type 5 phosphodiesterases. When cGMP remains at higher levels, the smooth muscle in the penis relaxes. The blood vessels dilate, which allows more blood to enter the cavernosa in the penis, filling them and causing an erection. After sexual stimulation, oral ED medications keep nitric oxide levels high by inhibiting the enzyme PDE5.

Benefits of Sildenafil

Sildenafil is an effective treatment for erectile dysfunction.
  • Improves Erectile Function
  • Increases Confidence

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Drug Details


What is Sildenafil used for?

Sildenafil is indicated to treat:
  • Erectile dysfunction
  • Pulmonary arterial hypertension


You should avoid Sildenafil if you are/have:

Contraindications for prescribing or using Sildenafil include:
  • Bleeding disorders
  • Eye or vision problems
  • Peyronie’s disease
  • History of priapism
  • Heart disease
  • History of bleeding problems or blood disease
Sildenafil Side Effects

What are the side effects of Sildenafil?

Common Sildenafil Side Effects
  • Headaches
  • Heartburn
  • Diarrhea
  • Flushing
  • Nosebleeds
  • Insomnia
Rare Sildenafil Side Effects
  • None

Sildenafil Dosage Information

Sildenafil Dosage & Frequency

Typical Sildenafil Dosage & Frequency
  • 100mg
  • Once every 36 hours


  • Viagra: Product Monograph
  • Erectile Dysfunction: Causes, Risk Factors and Management (Human Sexuality (Hardcover))
  • Sildenafil
  • Sildenafil
  • Sildenafil
  • Do Food and Dose Timing Affect the Efficacy of Sildenafil? A Randomized Placebo-Controlled Study
  • Impotence NIH Consensus Development Panel on Impotence

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