Silditop 100 is commonly sold as sildenafil 100 mg, a medicine for erectile dysfunction. Please confirm the active ingredient on your package. For sildenafil, the usual adult dosing guidance is: Usual starting dose: 50 mg, taken about 30–60 minutes before ***** activity. Maximum recommended dose: 100 mg in a 24-hour period. Frequency: No more than once in 24 hours. Important: A 100 mg tablet is the maximum usual dose, not the recommended starting dose for everyone. Because you've also mentioned Malegra DXT Plus and Filitra 10, do not take Silditop 100 on top of either medicine without medical advice. They may contain different drugs with overlapping effects. Avoid sildenafil if you use nitrate medicines for chest pain or riociguat. Seek emergency help for chest pain, fainting, sudden vision changes, or an erection lasting over four hours. One important question: Have you taken Malegra DXT Plus or Filitra 10 today? If yes, which one and how many hours ago? This will help me explain the safety considerations for your situation.