Drugn name: Sildenafil citrate
Brand name: Viagra
Use: Erectile dysfunction (impotence)
Viagra is a phosphodiesterase type-5 inhibitor. It works by increasing blood into the penis when sexually excited to cause an erection.
Dose:
50mg 1 hour before sexual activity. Maximum one dose per 24 hours.
Onset of effect may be delayed if taken with food.
Viagra is effective for 4 hours.
Cautions:
- heart disease
- anatomical deformation of the penis
- liver impairment
- kidney impairment
- bleeding disorders
- active peptic ulcer
Contra-indications:
- use of nitrates
- hypotension (low blood pressure)
- recent stroke
- unstable angina
- heart attack
- hereditary degenerative retinal disorders
Side effects:
The most common side effects include headache, indigestion and facial flushing.
Occasional:
- indigestion/heartburn
- vomiting
- headache
- flushing
- dizziness
- visual disturbance
- nasal congestion
Rarely:
- Prolonged erection
- hypersensitivity reaction
Via: Medic8® Family Health Guide
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