Viagra, or sildenafil citrate, primarily improves blood flow to the penis, facilitating erections. This happens by inhibiting an enzyme called phosphodiesterase-5 (PDE5).
Expect firmer, longer-lasting erections suitable for sexual activity. The effect typically begins within 30-60 minutes and can last for up to four hours.
However, be aware of potential side effects. These vary in frequency and severity. Common ones include:
- Headache Facial flushing Nasal congestion Indigestion Visual disturbances (blurred vision, changes in color perception)
Less common, but still possible side effects include:
- Muscle aches Dizziness Hearing loss Heart palpitations
Serious side effects, though rare, require immediate medical attention. These include:
Prolonged erection (priapism) lasting more than four hours. Sudden vision loss. Sudden hearing loss. Severe allergic reactions (rash, swelling, difficulty breathing).
Factors influencing the effectiveness and side effects include dosage, overall health, and interactions with other medications. Always discuss Viagra use with your doctor to assess suitability and potential risks. They can adjust the dosage or suggest alternatives if necessary. This information is for educational purposes only, and does not replace professional medical advice.
