<p>The strength of Fildena Reddepends on your doctor’s recommendation, but the medicine is typically taken once a day at a time that won’t interfere with your work or other activities. The effects of the pill usually kick in within 30 to 60 minutes, but it’s important to take it before sex to ensure that you can get a solid erection when needed. The drug shouldn’t be taken with nitrates, nitrites, or riociguat, as this can greatly reduce the effectiveness of the medication.</p>