Sildenafil, while effective for many, can cause side effects. Knowing what to expect helps manage them.
Common Side Effects
- Headache: This is frequently reported, usually mild and temporary. Facial flushing: A reddening of the face, neck, and chest can occur. Indigestion: Some users experience mild stomach upset. Nasal congestion: A stuffy or runny nose is possible. Visual disturbances: Blurred vision or changes in color perception are relatively uncommon.
These generally resolve on their own. If they persist or worsen, consult your doctor.
Less Common, but Serious Side Effects
While rare, some serious side effects warrant immediate medical attention:
Prolonged erection (priapism): A painful erection lasting more than four hours requires immediate medical help. Sudden vision loss: Seek immediate medical advice if you experience any sudden loss of vision. Hearing loss: Report any sudden decrease or loss of hearing to your doctor promptly. Heart problems: Sildenafil can exacerbate existing heart conditions. Discuss your heart health with your doctor before use.
This information is for general knowledge and doesn’t replace medical advice. Always consult your doctor before starting any new medication, especially if you have pre-existing health conditions.


