Sildenafil Alternatives Compared
| Sildenafil | Cialis | Viagra |
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| Sildenafil | Cialis tadalafil | Viagra sildenafil |
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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 daily for PAH. A headache, stomach... 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 |
Choose a suggestion below Erectile Dysfunction
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| More about Sildenafil | More about Cialis (tadalafil) | More about Viagra (sildenafil) | ||||||||||||||||||||||||
| Generic Status | ||||||||||||||||||||||||||
| Availability | ||||||||||||||||||||||||||
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Prescription only |
Prescription only |
Prescription only |
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| Ratings & Reviews | ||||||||||||||||||||||||||
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Sildenafil has an average rating of 8.2 out of 10 from a total of 457 ratings on Drugs.com. 77% of reviewers reported a positive effect, while 13% reported a negative effect. |
Cialis has an average rating of 8.6 out of 10 from a total of 521 ratings on Drugs.com. 83% of reviewers reported a positive effect, while 9% reported a negative effect. |
Viagra has an average rating of 8.6 out of 10 from a total of 242 ratings on Drugs.com. 83% of reviewers reported a positive effect, while 9% reported a negative effect. |
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| Drug Class | ||||||||||||||||||||||||||
| Side Effects | ||||||||||||||||||||||||||
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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. |
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| Pricing and Coupons * Prices are without insurance | ||||||||||||||||||||||||||
View all sildenafil prices |
View all Cialis prices and generic prices |
View all Viagra prices and generic prices |
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| Dosage Form(s) Available | ||||||||||||||||||||||||||
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| 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. | ||||||||||||||||||||||||||
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4 hours |
17.5 hours |
4 hours |
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| CSA Schedule** View glossary of 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. |
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. |
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 306 drugs are known to interact with sildenafil:
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A total of 275 drugs are known to interact with Cialis:
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A total of 306 drugs are known to interact with Viagra:
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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 |
March 27, 1998 |
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| WADA Class View World Anti-Doping Agency classifications. | ||||||||||||||||||||||||||
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N/A |
N/A |
N/A |
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| More Information | ||||||||||||||||||||||||||
| Patient 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.