Viagra
E291801
Viagra is a well-known prescription medication used to treat erectile dysfunction by increasing blood flow to the penis.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Viagra canonical | 3 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
brand name
ⓘ
pharmaceutical drug ⓘ prescription medication ⓘ |
| abbreviatedAs | PDE5 inhibitor ⓘ |
| approvedBy |
Food and Drug Administration
ⓘ
surface form:
U.S. Food and Drug Administration
|
| belongsToClass | phosphodiesterase type 5 inhibitor ⓘ |
| commonSideEffect |
dizziness
ⓘ
flushing ⓘ headache ⓘ indigestion ⓘ nasal congestion ⓘ visual disturbances ⓘ |
| commonStrength |
100 mg
ⓘ
25 mg ⓘ 50 mg ⓘ |
| contraindicatedIn | severe cardiovascular disease without medical supervision ⓘ |
| contraindicatedWith |
nitrates
ⓘ
nitric oxide donors ⓘ |
| developedBy | Pfizer ⓘ |
| doesNotCause | automatic erection without sexual stimulation ⓘ |
| dosageForm | tablet ⓘ |
| durationOfEffect | up to 4 hours ⓘ |
| FDAApprovalYear | 1998 ⓘ |
| hasActiveIngredient | sildenafil citrate ⓘ |
| hasFamousCompetitor |
Cialis
ⓘ
Levitra ⓘ |
| hasGenericName | sildenafil ⓘ |
| hasIndication | erectile dysfunction in adult men ⓘ |
| legalStatusInEuropeanUnion | prescription only ⓘ |
| legalStatusInUnitedStates | prescription only ⓘ |
| manufacturedBy | Pfizer ⓘ |
| marketedSince | 1998 ⓘ |
| mechanismOfAction |
enhances blood flow to the penis during sexual stimulation
ⓘ
increases cyclic guanosine monophosphate levels in penile tissue ⓘ inhibits phosphodiesterase type 5 enzyme ⓘ |
| metabolizedBy |
CYP2C9
ⓘ
CYP3A4 ⓘ |
| notRecommendedFor | children ⓘ |
| onsetOfAction | about 30 to 60 minutes ⓘ |
| originallyResearchedFor | angina pectoris ⓘ |
| pregnancyCategory | not indicated for use in women ⓘ |
| requires |
medical evaluation before use
ⓘ
prescription ⓘ |
| routeOfAdministration | oral ⓘ |
| seriousSideEffect |
priapism
ⓘ
sudden hearing loss ⓘ sudden vision loss ⓘ |
| taken | as needed before sexual activity ⓘ |
| treats | erectile dysfunction ⓘ |
| typicalStartingDose | 50 mg ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Roush Fenway Racing
subject surface form:
Stay Up! (Viagra)