Guys primarily use this medication for sexual purposes. Fildena 150 mg helps men get longer, harder erections during intercourse. This medication's ingredient, sildenafil, helps men get strong erections during sexual activity. This drug increases blood flow to the penile tissues in men. Take this medication without regard to cold drinks or heavy meals. The only people who should use this medication are men over the age of 18. You can take this medication with or without food. Do not chew or crush the tablet; instead, take it with water. Adhere to your doctor's instructions when using this medication.