Cenforce 100 contains sildenafil citrate, and headaches are one of its most common side effects. Headaches usually occur because sildenafil relaxes and widens blood vessels, increasing blood flow not only in the ***** but also in other parts of the body, including the head. When are headaches most likely to occur? Within 1–4 hours after taking the tablet, when the medication reaches peak levels in the bloodstream. When taking a higher dose than needed, as stronger blood vessel dilation may increase the likelihood of headaches. If you are dehydrated, which can make headaches worse. After consuming alcohol, as alcohol can enhance blood vessel dilation and contribute to dehydration. If you are sensitive to sildenafil or are using it for the first time. When taking certain medications that may interact with sildenafil and increase side effects. How can headaches be managed? Drink plenty of water before and after taking the medication. Avoid excessive alcohol consumption. Rest in a quiet environment if a headache develops. Discuss dosage adjustments with your doctor if headaches occur frequently. When should you seek medical attention? Contact a healthcare provider if: The headache is severe or persistent. It is accompanied by dizziness, chest pain, vision changes, or fainting. It does not improve after the medication's effects wear off. Most sildenafil-related headaches are mild to moderate and resolve as the drug leaves the body, usually within several hours. If headaches are recurring or troublesome, consult your healthcare provider about alternative treatments or dosage adjustments.