Men with erectile dysfunction are the main patients for the drug fildena 100mg. Take fildena half an hour to an hour before you want to engage in sexual activity. This gives the drug ample time to be absorbed and begin functioning. Alcohol and high-fat meals should be avoided before taking Fildena since they may decrease its efficacy. When using the prescription, it is advised to stay away from these substances. Fildena 100mg should be taken orally as soon as possible, along with a full glass of water. Back pain, nausea, stuffy nose, headaches, blurred vision, and flushing in the face, neck, or chest are some of the side effects of fildena.