Fildena 100 mg should be taken orally with a glass of water, approximately 30 minutes to 1 hour before anticipated sexual activity. It can be taken with or without food. Sexual stimulation is necessary for the medication to work effectively. Like all medications, Fildena 100 mg can cause side effects. Common side effects may include headache, flushing, indigestion, nasal congestion, dizziness, and changes in vision. Serious side effects such as priapism (a prolonged and painful erection lasting more than 4 hours), sudden vision loss, or hearing loss are rare but require immediate medical attention.

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