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Sildenafil Alternatives Compared

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Sildenafil Remove Sildenafil from your drug comparison Cialis Remove Cialis from your drug comparison Viagra Remove Viagra from your drug comparison
View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Sildenafil Remove Sildenafil from your drug comparison Cialis tadalafil Remove Cialis from your drug comparison Viagra sildenafil Remove Viagra from your drug comparison

Sildenafil is used to treat erectile dysfunction (ED) and to reduce blood pressure in pulmonary arterial hypertension (PAH). It is taken when needed for ED and on a daily basis for PAH. A headache,... View more

Cialis is used to treat erectile dysfunction (ED) and to reduce symptoms of benign prostatic hyperplasia (BPH). One 'as needed' tablet lasts for 36 hours or Cialis is available as a lower dosage that... View more

Viagra is used to treat erectile dysfunction (ED), but will not have any effect in the absence of sexual stimulation. A headache, stomach upsets, and flushing are the main side effects. Prescribed... View more

Prescription only

Prescription only

Prescription only

Ratings & Reviews

Recent helpful reviews

View all 412 reviews

View all 492 reviews

View all 218 reviews

Drug Class

Side Effects

Commonly reported side effects include: dyspepsia, headache, visual disturbance, flushing.

See the full sildenafil side effects document.

Common side effects include: dyspepsia, headache.

See the full Cialis side effects document.

Common side effects include: dyspepsia, headache, visual disturbance, flushing.

See the full Viagra side effects document.

Pricing and Coupons

* Prices are without insurance
Quantity 10 tablet
Dosage 20 mg
Per Unit* $1.67 - $2.08
Cost* $16.68 - $20.76

View all sildenafil prices

Quantity 3 tablet
Dosage 20 mg
Per Unit* $32.34
Cost* $97.03

View all Cialis prices and generic prices

Quantity 2 tablet
Dosage 100 mg
Per Unit* $82.20
Cost* $164.39

View all Viagra prices and generic prices

Get free Discount Card

Get free Discount Card

Get free Discount Card

Generic Availability

Yes (this medicine)

Yes

Yes

Dosage Form(s) Available
  • Intravenous solution
  • Oral powder for reconstitution
  • Oral tablet
  • Oral tablet
  • Oral tablet

Brand Names
Revatio, Viagra Other tadalafil brands include: Adcirca, Alyq Other sildenafil brands include: Revatio

Half Life

The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value.

4 hours

17.5 hours

4 hours

CSA Schedule**

View glossary of terms.
N
Not a controlled drug

Is not subject to the Controlled Substances Act.
N
Not a controlled drug

Is not subject to the Controlled Substances Act.
N
Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category
B
Category B No proven risk in humans

See the full Pregnancy Warnings document.
B
Category B No proven risk in humans

See the full Pregnancy Warnings document.
B
Category B No proven risk in humans

See the full Pregnancy Warnings document.

FDA Alerts

FDA Alerts (13)

FDA Alerts (8)

FDA Alerts (15)

Drug Interactions

A total of 297 drugs are known to interact with sildenafil:

  • 31 major drug interactions (117 brand and generic names)
  • 262 moderate drug interactions (837 brand and generic names)
  • 4 minor drug interactions (42 brand and generic names)

A total of 264 drugs are known to interact with Cialis:

  • 9 major drug interactions (51 brand and generic names)
  • 157 moderate drug interactions (493 brand and generic names)
  • 98 minor drug interactions (272 brand and generic names)

A total of 297 drugs are known to interact with Viagra:

  • 31 major drug interactions (117 brand and generic names)
  • 262 moderate drug interactions (837 brand and generic names)
  • 4 minor drug interactions (42 brand and generic names)

Alcohol/Food/Lifestyle Interactions
  • If you are receiving therapy with sildenafil you should avoid the regular consumption of large... View more
  • Sildenafil can lower blood pressure, and combining it with alcohol may further increase this... View more
  • Tadalafil can lower blood pressure, and combining it with alcohol may further increase this effect.... View more
  • If you are receiving therapy with sildenafil you should avoid the regular consumption of large... View more
  • Sildenafil can lower blood pressure, and combining it with alcohol may further increase this... View more

Disease Interactions

First Approval Date

March 27, 1998

November 21, 2003

March 27, 1998

WADA Class

View World Anti-Doping Agency classifications.

N/A

N/A

N/A

More Information

Consumer Resources

Professional Resources

Related Treatment Guide

** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer