Sildisoft Tablets typically contain Sildenafil, which is commonly used for erectile dysfunction. Headaches are one of the most frequent side effects. Here’s a detailed explanation of when and why they can occur: Shortly after taking the tablet – Headaches usually appear 30 minutes to 2 hours after ingestion, which corresponds to the time Sildenafil reaches peak levels in the bloodstream. Due to blood vessel dilation – Sildenafil works by relaxing blood vessels to increase blood flow. This vasodilation can sometimes trigger a headache, similar to what happens with other medications that affect blood vessels. With higher doses – Taking more than the recommended dose (for example, exceeding 50–100 mg, depending on prescription) increases the likelihood and severity of headaches. If combined with other medications – Certain drugs, especially nitrates or blood pressure medications, can interact and increase the risk of headaches. Other contributing factors – Dehydration, alcohol consumption, stress, or fatigue can make headaches more likely after taking Sildisoft. Tips to reduce headaches: Take the tablet on an empty stomach for faster absorption and potentially milder side effects. Stay hydrated. Avoid alcohol around the time of taking the medication. If headaches are severe or persistent, consult a doctor. If you want, I can also explain why sometimes headaches don’t happen at all even after taking Sildisoft. This is actually a common question.