Fildena 120 mg contains sildenafil citrate, which is the same active ingredient found in other erectile dysfunction (ED) medications like Viagra. Sildenafil citrate works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which helps to relax blood vessels and increase blood flow to the penis, leading to improved erectile function. In terms of effectiveness, Fildena 120 mg should work similarly to other sildenafil-based ED medications, such as Viagra. It typically starts working within 30 to 60 minutes after ingestion and can last for about 4 to 6 hours. However, individual responses to the medication may vary, and some people may find one brand more effective or tolerable than others. One potential difference between Fildena and other brand-name ED medications is the cost. Generic versions of sildenafil, including Fildena, tend to be more affordable compared to brand-name medications like Viagra. This can make them a more accessible option for individuals seeking treatment for ED. It's essential to note that while Fildena 120 mg and other ED medications containing sildenafil are generally safe and effective for most men with ED, they can have potential side effects and interactions with other medications. It's crucial to use them under the guidance of a healthcare professional and to follow the prescribed dosage instructions. Overall, Fildena 120 mg is a generic alternative to brand-name ED medications containing sildenafil citrate, and its effectiveness and safety profile are comparable to those of other sildenafil-based treatments for erectile dysfunction.