Comparing Viagra vs Cialis
| Viagra (sildenafil) | Cialis (tadalafil) |
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| Viagra (sildenafil) | Cialis (tadalafil) |
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Prescription only
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
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... View more |
Related suggestions Erectile Dysfunction
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| More about Viagra (sildenafil) | More about Cialis (tadalafil) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Viagra has an average rating of 8.6 out of 10 from a total of 256 ratings on Drugs.com. 84% of reviewers reported a positive effect, while 9% reported a negative effect. |
Cialis has an average rating of 8.6 out of 10 from a total of 556 ratings on Drugs.com. 83% of reviewers reported a positive effect, while 8% reported a negative effect. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | |||||||||||||||||
View all Viagra side effects |
View all Cialis side effects |
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| Generic Availability | |||||||||||||||||
| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Viagra prices |
View all Cialis prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Other sildenafil brands include: Revatio | Other tadalafil brands include: Adcirca, Alyq, Chewtadzy, Tadliq | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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4 hours |
17.5 hours |
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| CSA Schedule 1 View glossary of CSA terms | |||||||||||||||||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||||||||||
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Category B
No proven risk in humans
See the full pregnancy warnings document. |
Category B
No proven risk in humans
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 372 drugs are known to interact with Viagra:
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A total of 351 drugs are known to interact with Cialis:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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March 27, 1998 |
November 21, 2003 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
N/A |
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| Related Treatment Guide | |||||||||||||||||
1 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.
See also:
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.