Fildena 150 mg contains sildenafil, food can affect how quickly it works. Importantly, 150 mg is above the usual recommended maximum sildenafil dose of 100 mg for ED. D DailyMed +1 Diet interactions High-fat meals: The main food interaction. A fatty meal can delay absorption by about 60 minutes and reduce the peak blood level by about 29%, so the medicine may take longer to work. D DailyMed Light/normal meals: Sildenafil can generally be taken with or without food. D DailyMed Alcohol: Large amounts can worsen dizziness/low blood pressure and can also make achieving an erection more difficult. Grapefruit: It may increase sildenafil exposure because of effects on drug metabolism, so it's sensible to avoid large amounts of grapefruit or grapefruit juice. Hydration: Staying normally hydrated may help reduce dizziness or headache. The bigger concern with Fildena 150 mg is the dose itself. Don't take 150 mg on your own or combine it with another sildenafil/tadalafil product. The standard maximum recommended sildenafil dose for ED is 100 mg once per day. D DailyMed If you've already taken Fildena 150 mg today, tell me when you took it and whether you've taken any other ED medicine, and I can tell you what to watch for.