<p><p>The potency of Fildena Red depends on your doctor’s recommendations, and the drug is usually taken once a day at a convenient time so as not to interfere with your daily activities. The pill’s effect usually begins 30-60 minutes after taking it, so it is important to use it before sex to ensure a reliable erection at the right time. Co-administration of Fildena Red with nitrates, nitrites or riociguat should be avoided, as this can significantly reduce the effectiveness of the medication and lead to undesirable consequences.</p> <p>See also the following.</p>