Taking 400 mg of Viagra significantly increases the risk of side effects compared to the recommended dosage. Headache is common, often accompanied by facial flushing and nasal congestion. You may also experience indigestion, dizziness, or visual disturbances, including blurred vision or sensitivity to light. Muscle aches and back pain are possible.
More serious, though less frequent, side effects include prolonged erection (priapism), which requires immediate medical attention. Sudden vision loss or hearing loss are also potential, albeit rare, complications. A drop in blood pressure, leading to fainting, can occur, especially if combined with alcohol or certain medications. Always inform your doctor about all medications you are taking.
If you experience any chest pain, shortness of breath, or irregular heartbeat, seek immediate medical help. These could indicate a serious cardiovascular event. Remember, exceeding the recommended dosage dramatically increases these risks. Consult your doctor before altering your dosage.
This information is for general knowledge and does not replace professional medical advice. Always discuss any concerns with your physician or pharmacist before adjusting your medication regimen.
