Silagra is mostly used for erectile dysfunction. People buy silagra online to improve the blood flow in the male genital organ for sexual arousal. Silagra is especially used to treat erectile dysfunction in men. Do not take Silagra more than once a day. It is for use only in men. It is harmful if used by a woman during pregnancy or while breast-feeding. It can be taken with or without food. It is usually taken only about 15 to 30 minutes before sexual activity. Follow your doctor's instructions. Store at room temperature away from moisture, heat, and light.