Sildigra 100 mg, which is a medication used to treat erectile dysfunction, contains sildenafil citrate. The regulations regarding the prescription of Sildigra can vary by country. In many countries, Sildigra 100 mg (the active ingredient) is classified as a prescription medication, meaning that you would need a doctor's prescription to obtain it legally. This is because it can have significant side effects and interactions with other medications, so a healthcare provider needs to ensure it's safe and appropriate for you. However, in some countries, you might find sildenafil available over-the-counter in lower doses, but this is less common. Always check local regulations and consult with a healthcare professional to ensure you’re using the medication safely and legally.