Fildena 150 mg is sold as a sildenafil product, and listings describe it as sildenafil citrate 150 mg. W wellnivpharma.com +1 However, there is an important distinction: Sildenafil is available generically, including standard strengths such as 25 mg, 50 mg, and 100 mg. 150 mg sildenafil is not a standard recommended ED strength. Official prescribing information recommends a maximum of 100 mg once daily for erectile dysfunction. D DailyMed +1 Therefore, I would not substitute or increase to 150 mg on your own, even if a product is marketed as “generic Fildena 150.” If 100 mg isn't effective, it's better to discuss the response with your doctor rather than taking 150 mg. If you're looking for a generic alternative to Fildena 150 mg, I can explain what sildenafil 100 mg options are available and how they compare.