Fildena 150 is a prescription drug that contains the active component sildenafil citrate. Fildena 150 should be taken orally 30 minutes to an hour before sexual activity. Fildena 150mg effects can last up to 4 hours. The duration and amount of treatment will be determined by the individual’s needs and medical history. It is critical to follow your healthcare provider’s dosing guidelines and not exceed the authorized dose. Fildena 150 is a prescription drug that should only be used under the supervision of a doctor. It may not be safe or appropriate for everyone because it can interact with certain medications and may be unsafe for persons with certain health issues.