Cenforce D is a combination medication containing sildenafil citrate (for erectile dysfunction) and dapoxetine (for premature *****). Because it has two active ingredients, the timing of side effects can vary depending on the component and your body. Here’s a detailed breakdown  Onset of Side Effects 1. Sildenafil (ED component) Common side effects: headache, flushing, nasal congestion, dizziness, upset stomach. Timing: Usually within 30–60 minutes of taking the tablet, around the same time as it starts working for erections. Duration: Mild side effects often resolve in a few hours as the medication wears off. 2. Dapoxetine (PE component) Common side effects: nausea, dizziness, dry mouth, sweating, sometimes headache. Timing: Typically 30–120 minutes after ingestion, because dapoxetine is absorbed and starts acting on the serotonin system. Duration: Side effects usually last a few hours; dizziness or nausea may persist slightly longer if you are sensitive or haven’t eaten.   Factors That Influence Timing Food intake: Taking Cenforce D with a heavy meal may delay absorption, so side effects might start later than expected. Individual metabolism: Some people process sildenafil and dapoxetine faster or slower. Other medications: Interactions can make side effects stronger or appear sooner (especially nitrates, alpha-blockers, or alcohol).  When to Seek Immediate Help Seek urgent medical attention if you experience: Erection lasting more than 4 hours (priapism) Severe chest pain or irregular heartbeat Sudden vision or hearing changes Severe dizziness, fainting, or shortness of breath  Typical Pattern Within 30–60 min: Sildenafil-related effects like flushing or headache may appear. Within 30–120 min: Dapoxetine-related effects like nausea or mild dizziness may appear. Most mild side effects resolve within 4–6 hours, but if severe or persistent, contact a doctor.