Click Here To Buy Now Sildenafil 50 is a lower-dose version of sildenafil citrate, used to treat erectile dysfunction. It works similarly to other Sildenafil formulations by enhancing blood flow to the penis in response to sexual stimulation. it’s taken about 30 minutes to an hour before sexual activity, and it's important to adhere to the prescribed dosage. Potential side effects may include headaches, flushing, dizziness, and digestive issues.