Suhagra 25 mg is a lower-dose version of Suhagra, which contains sildenafil citrate. It is used to treat erectile dysfunction (ED) by enhancing blood flow to the penis, which helps achieve and maintain an erection during sexual activity. The usual starting dose for Suhagra is 50 mg, but Suhagra 25 mg may be prescribed if you experience side effects with the higher dose or have specific health conditions that require a lower dose.