Common side effects of Sildenafil citrate include headache, flushing, indigestion, nasal congestion, and dizziness. These side effects are usually mild to moderate and transient. Serious but rare side effects may include sudden vision or hearing loss, and priapism (prolonged erection). Seek medical attention if you experience any severe side effects.

https://www.genericday.com/fildena-25-mg.html

Sildisoft tablets should be taken orally with water, approximately 30 minutes to 1 hour before sexual activity. The effects of sildenafil citrate typically last for about 4 to 6 hours. It is important to note that sexual stimulation is required for the medication to work effectively.

https://www.genericday.com/sildisoft-tablets.html