Cenforce FM 100 mg contains sildenafil citrate, a PDE‑5 inhibitor, and is specifically designed for treating erectile dysfunction (ED). The reason it is usually recommended to take it only when needed is tied to how it works and safety considerations:  requires sexual stimulation Sildenafil does not automatically cause an erection. It enhances blood flow to the penis only when you are sexually aroused, so taking it without planning sexual activity has no effect.  Timing and peak effectiveness Sildenafil typically starts working within 30–60 minutes and lasts 3–5 hours. Taking it “just in case” doesn’t provide constant benefit — it’s optimized for use shortly before sexual activity.  Avoid unnecessary side effects Common side effects include headache, Cenforce FM 100 mg , dizziness, indigestion, nasal congestion, or blurred vision. Taking the drug when you don’t need it exposes you to side effects unnecessarily.  interactions and health risks Taking sildenafil unnecessarily may increase risks if you: Are using nitrate medications (heart medicine) — can cause dangerous drops in blood pressure. Have heart, liver, or kidney conditions. Are prone to low blood pressure or other vascular problems.   Not intended for daily use Some ED medications have a “daily low-dose” option, but Cenforce FM 100 mg is a standard on-demand dose. Using it daily without medical guidance can be unsafe and is not how it’s designed to be used.   Cenforce FM 100 mg is meant to be taken shortly before sexual activity, when its effect is needed, to maximize benefits and minimize risks. If you want, I can make a quick chart comparing Cenforce FM, Eriacta, Malegra, and Tadarise, showing onset, duration, and whether they are taken as needed or daily — it makes it really easy to see which is best for weak erections.