Fildena 150 is another dosage of the erectile dysfunction medication that contains sildenafil citrate, similar to Fildena 200 but at a lower dose. It’s used to help men achieve and maintain an erection sufficient for sexual activity. The 150 mg dose is generally considered if lower doses, such as 50 mg or 100 mg, are not effective. The exact dosage should be determined by a healthcare provider based on your individual response and tolerance. sildenafil-based medications, Fildena 150 works by increasing blood flow to the penis in response to sexual stimulation. It typically takes about 30 to 60 minutes to start working, and its effects can last for up to 4-5 hours.Common side effects include headaches, flushing, indigestion, nasal congestion, and dizziness. If you experience more severe side effects such as vision changes, hearing loss, or a prolonged erection lasting more than 4 hours, seek medical help immediately.