It's important to avoid taking Fildena 100 mg if you are also using nitrates for chest pain or heart problems, as the combination can cause a sudden and serious decrease in blood pressure. Inform your healthcare provider about your medical history and any medications you are currently taking to avoid potential interactions.Sildenafil citrate works by inhibiting the enzyme phosphodiesterase type 5 (PDE-5), which regulates blood flow in the penis.
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