Viagra, the brand name for sildenafil citrate, primarily treats erectile dysfunction (ED). It works by increasing blood flow to the penis, facilitating an erection when sexually stimulated. This effect is achieved by inhibiting an enzyme called phosphodiesterase-5 (PDE5).
Who Can Use Viagra?
Men aged 18 and over diagnosed with ED can generally use Viagra, although certain health conditions may present contraindications. Always consult a doctor before starting any medication, including Viagra. They will assess your overall health and determine suitability. Specific conditions requiring caution include heart problems, low blood pressure, and certain eye conditions.
Viagra Dosage and Administration
A doctor prescribes the appropriate Viagra dosage, typically ranging from 25mg to 100mg. It’s usually taken orally about 30-60 minutes before anticipated sexual activity. The medication’s effectiveness varies between individuals, and adjusting the dose might be necessary based on response and potential side effects. Never exceed the prescribed dosage.
Potential Side Effects
Common side effects include headache, facial flushing, nasal congestion, and indigestion. More serious, albeit rare, side effects include vision changes, hearing loss, and prolonged erections. Seek immediate medical attention if you experience any concerning side effects.
| Headache | Common | May subside spontaneously; consult doctor if severe or persistent. |
| Facial Flushing | Common | Generally mild and temporary. |
| Nasal Congestion | Common | Can be managed with over-the-counter decongestants. |
| Indigestion | Common | May be relieved by taking the medication with food. |
| Vision Changes | Rare | Seek immediate medical attention. |
Viagra and Other Medications
Inform your doctor about all medications you are currently taking, including prescription and over-the-counter drugs, as interactions can occur. Certain medications, such as nitrates, should not be taken concurrently with Viagra due to potentially dangerous consequences.


