<p>Fildena is usually taken orally with water, approximately 30 minutes to 1 hour before sexual activity. Sexual stimulation is necessary for the medication to be effective. Like any medication, Fildena may have potential side effects and contraindications. Common side effects may include headache, dizziness, flushing, indigestion, and nasal congestion. It is important to inform a healthcare professional about any pre-existing medical conditions or medications being taken to ensure safe use.<br /> </p>