Sildalist Strong 140 mg combines sildenafil and tadalafil, two PDE-5 inhibitors used to treat erectile dysfunction (ED) by increasing blood flow to the penis. The combination aims to provide both quick onset (from sildenafil) and longer duration (from tadalafil) of action. Some sources suggest that when taken accurately and as prescribed, long-term use may be safe. However, clearer scientific evidence specifically on Sildalist is limited, and regular medical monitoring is recommended.