Silditop 100 is another brand of sildenafil, similar to Viagra, and it is commonly used to treat erectile dysfunction (ED). The active ingredient in Silditop 100 is sildenafil citrate, just like in Viagra. So, when you compare Filitra 10 (which contains vardenafil) and Silditop 100 (which contains sildenafil), the primary difference is in the type of PDE5 inhibitor used. Here are some key distinctions between them: 1. Active Ingredient: Filitra 10 contains vardenafil. Silditop 100 contains sildenafil. Both are PDE5 inhibitors, but they work slightly differently in terms of how long they stay active and how quickly they take effect. 2. Onset of Action: Filitra 10 (Vardenafil): Typically takes about 30-60 minutes to start working. Silditop 100 (Sildenafil): Works a bit faster, usually within 30 minutes. 3. Duration of Action: Filitra 10 (Vardenafil): It stays active for around 4-6 hours, so it might be effective for a slightly shorter time compared to sildenafil. Silditop 100 (Sildenafil): It generally works for about 4-5 hours, but can sometimes last a bit longer, depending on individual factors like metabolism.